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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 LT |
15 | */ |
16 | ||
1da177e4 LT |
17 | #include <linux/kernel.h> |
18 | #include <linux/errno.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/tty.h> | |
22 | #include <linux/tty_driver.h> | |
23 | #include <linux/tty_flip.h> | |
24 | #include <linux/serial.h> | |
25 | #include <linux/module.h> | |
26 | #include <linux/moduleparam.h> | |
27 | #include <linux/spinlock.h> | |
3a0f43e9 | 28 | #include <linux/uaccess.h> |
1da177e4 | 29 | #include <linux/usb.h> |
a969888c | 30 | #include <linux/usb/serial.h> |
b2d6d98f | 31 | #include <asm/unaligned.h> |
1da177e4 LT |
32 | #include "pl2303.h" |
33 | ||
228e4105 JH |
34 | |
35 | #define PL2303_QUIRK_UART_STATE_IDX0 BIT(0) | |
23c6acb9 | 36 | #define PL2303_QUIRK_LEGACY BIT(1) |
228e4105 | 37 | |
7d40d7e8 | 38 | static const struct usb_device_id id_table[] = { |
1da177e4 LT |
39 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, |
40 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, | |
3d861494 | 41 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, |
1da177e4 LT |
42 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, |
43 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, | |
b483b6aa | 44 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) }, |
4be2fa18 | 45 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) }, |
727df356 | 46 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) }, |
18344a1c | 47 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) }, |
96a3e79e | 48 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) }, |
1da177e4 | 49 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, |
8a28dea3 | 50 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, |
1da177e4 LT |
51 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, |
52 | { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, | |
53 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, | |
54 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, | |
55 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, | |
58381719 | 56 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, |
1da177e4 LT |
57 | { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, |
58 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, | |
59 | { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, | |
60 | { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, | |
61 | { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, | |
62 | { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, | |
63 | { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, | |
64 | { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, | |
228e4105 JH |
65 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1), |
66 | .driver_info = PL2303_QUIRK_UART_STATE_IDX0 }, | |
67 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65), | |
68 | .driver_info = PL2303_QUIRK_UART_STATE_IDX0 }, | |
69 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75), | |
70 | .driver_info = PL2303_QUIRK_UART_STATE_IDX0 }, | |
e7beb667 | 71 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, |
912299f6 | 72 | { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */ |
acbb36f1 | 73 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
c6c27721 CL |
74 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
75 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, | |
6cceb05f | 76 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
c6c27721 | 77 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
491b04ce | 78 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
3b928474 | 79 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
b7aa94b6 | 80 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
8fd80133 | 81 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
2d94b981 | 82 | { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, |
9e3285db | 83 | { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, |
cc311ee7 | 84 | { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, |
7c992001 | 85 | { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, |
af4b8514 | 86 | { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, |
8540d666 | 87 | { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) }, |
f36ecd5d | 88 | { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) }, |
49276560 | 89 | { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) }, |
35904e6b | 90 | { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) }, |
9a61d726 | 91 | { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) }, |
598f0b70 | 92 | { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) }, |
1da177e4 LT |
93 | { } /* Terminating entry */ |
94 | }; | |
95 | ||
372db8a7 | 96 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 97 | |
1da177e4 LT |
98 | #define SET_LINE_REQUEST_TYPE 0x21 |
99 | #define SET_LINE_REQUEST 0x20 | |
100 | ||
101 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
102 | #define SET_CONTROL_REQUEST 0x22 | |
103 | #define CONTROL_DTR 0x01 | |
104 | #define CONTROL_RTS 0x02 | |
105 | ||
106 | #define BREAK_REQUEST_TYPE 0x21 | |
3a0f43e9 | 107 | #define BREAK_REQUEST 0x23 |
1da177e4 LT |
108 | #define BREAK_ON 0xffff |
109 | #define BREAK_OFF 0x0000 | |
110 | ||
111 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
112 | #define GET_LINE_REQUEST 0x21 | |
113 | ||
114 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
115 | #define VENDOR_WRITE_REQUEST 0x01 | |
116 | ||
117 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
118 | #define VENDOR_READ_REQUEST 0x01 | |
119 | ||
228e4105 | 120 | #define UART_STATE_INDEX 8 |
1da177e4 LT |
121 | #define UART_STATE_TRANSIENT_MASK 0x74 |
122 | #define UART_DCD 0x01 | |
123 | #define UART_DSR 0x02 | |
124 | #define UART_BREAK_ERROR 0x04 | |
125 | #define UART_RING 0x08 | |
126 | #define UART_FRAME_ERROR 0x10 | |
127 | #define UART_PARITY_ERROR 0x20 | |
128 | #define UART_OVERRUN_ERROR 0x40 | |
129 | #define UART_CTS 0x80 | |
130 | ||
1da177e4 LT |
131 | |
132 | enum pl2303_type { | |
7f966ac7 JH |
133 | TYPE_01, /* Type 0 and 1 (difference unknown) */ |
134 | TYPE_HX, /* HX version of the pl2303 chip */ | |
359defda JH |
135 | TYPE_COUNT |
136 | }; | |
137 | ||
138 | struct pl2303_type_data { | |
139 | speed_t max_baud_rate; | |
140 | unsigned long quirks; | |
1da177e4 LT |
141 | }; |
142 | ||
8bf769eb | 143 | struct pl2303_serial_private { |
b6934681 | 144 | const struct pl2303_type_data *type; |
228e4105 | 145 | unsigned long quirks; |
8bf769eb JH |
146 | }; |
147 | ||
1da177e4 LT |
148 | struct pl2303_private { |
149 | spinlock_t lock; | |
1da177e4 LT |
150 | u8 line_control; |
151 | u8 line_status; | |
623c8263 JH |
152 | |
153 | u8 line_settings[7]; | |
1da177e4 LT |
154 | }; |
155 | ||
b6934681 | 156 | static const struct pl2303_type_data pl2303_type_data[TYPE_COUNT] = { |
359defda JH |
157 | [TYPE_01] = { |
158 | .max_baud_rate = 1228800, | |
159 | .quirks = PL2303_QUIRK_LEGACY, | |
160 | }, | |
161 | }; | |
162 | ||
362eb026 JH |
163 | static int pl2303_vendor_read(struct usb_serial *serial, u16 value, |
164 | unsigned char buf[1]) | |
eb44da0b | 165 | { |
362eb026 | 166 | struct device *dev = &serial->interface->dev; |
ccfe8188 JH |
167 | int res; |
168 | ||
169 | res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
eb44da0b | 170 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, |
362eb026 JH |
171 | value, 0, buf, 1, 100); |
172 | if (res != 1) { | |
173 | dev_err(dev, "%s - failed to read [%04x]: %d\n", __func__, | |
174 | value, res); | |
175 | if (res >= 0) | |
176 | res = -EIO; | |
177 | ||
178 | return res; | |
179 | } | |
ccfe8188 | 180 | |
362eb026 | 181 | dev_dbg(dev, "%s - [%04x] = %02x\n", __func__, value, buf[0]); |
ccfe8188 | 182 | |
362eb026 | 183 | return 0; |
eb44da0b SS |
184 | } |
185 | ||
362eb026 | 186 | static int pl2303_vendor_write(struct usb_serial *serial, u16 value, u16 index) |
eb44da0b | 187 | { |
362eb026 | 188 | struct device *dev = &serial->interface->dev; |
ccfe8188 JH |
189 | int res; |
190 | ||
362eb026 JH |
191 | dev_dbg(dev, "%s - [%04x] = %02x\n", __func__, value, index); |
192 | ||
ccfe8188 | 193 | res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
eb44da0b SS |
194 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, |
195 | value, index, NULL, 0, 100); | |
362eb026 JH |
196 | if (res) { |
197 | dev_err(dev, "%s - failed to write [%04x]: %d\n", __func__, | |
198 | value, res); | |
199 | return res; | |
200 | } | |
ccfe8188 | 201 | |
362eb026 | 202 | return 0; |
eb44da0b SS |
203 | } |
204 | ||
228e4105 JH |
205 | static int pl2303_probe(struct usb_serial *serial, |
206 | const struct usb_device_id *id) | |
207 | { | |
208 | usb_set_serial_data(serial, (void *)id->driver_info); | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
372db8a7 | 213 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 | 214 | { |
8bf769eb | 215 | struct pl2303_serial_private *spriv; |
7f966ac7 | 216 | enum pl2303_type type = TYPE_01; |
3e152505 | 217 | unsigned char *buf; |
8bf769eb JH |
218 | |
219 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); | |
220 | if (!spriv) | |
221 | return -ENOMEM; | |
1da177e4 | 222 | |
362eb026 | 223 | buf = kmalloc(1, GFP_KERNEL); |
8bf769eb JH |
224 | if (!buf) { |
225 | kfree(spriv); | |
3e152505 | 226 | return -ENOMEM; |
8bf769eb | 227 | } |
3e152505 | 228 | |
b52e1113 | 229 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
7f966ac7 | 230 | type = TYPE_01; /* type 0 */ |
b52e1113 | 231 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) |
7f966ac7 | 232 | type = TYPE_HX; |
281393ad | 233 | else if (serial->dev->descriptor.bDeviceClass == 0x00) |
7f966ac7 | 234 | type = TYPE_01; /* type 1 */ |
281393ad | 235 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) |
7f966ac7 | 236 | type = TYPE_01; /* type 1 */ |
b52e1113 | 237 | dev_dbg(&serial->interface->dev, "device type: %d\n", type); |
1da177e4 | 238 | |
359defda | 239 | spriv->type = &pl2303_type_data[type]; |
228e4105 | 240 | spriv->quirks = (unsigned long)usb_get_serial_data(serial); |
359defda | 241 | spriv->quirks |= spriv->type->quirks; |
228e4105 | 242 | |
8bf769eb | 243 | usb_set_serial_data(serial, spriv); |
3e152505 | 244 | |
362eb026 JH |
245 | pl2303_vendor_read(serial, 0x8484, buf); |
246 | pl2303_vendor_write(serial, 0x0404, 0); | |
247 | pl2303_vendor_read(serial, 0x8484, buf); | |
248 | pl2303_vendor_read(serial, 0x8383, buf); | |
249 | pl2303_vendor_read(serial, 0x8484, buf); | |
250 | pl2303_vendor_write(serial, 0x0404, 1); | |
251 | pl2303_vendor_read(serial, 0x8484, buf); | |
252 | pl2303_vendor_read(serial, 0x8383, buf); | |
253 | pl2303_vendor_write(serial, 0, 1); | |
254 | pl2303_vendor_write(serial, 1, 0); | |
23c6acb9 | 255 | if (spriv->quirks & PL2303_QUIRK_LEGACY) |
362eb026 | 256 | pl2303_vendor_write(serial, 2, 0x24); |
7f966ac7 JH |
257 | else |
258 | pl2303_vendor_write(serial, 2, 0x44); | |
3e152505 SS |
259 | |
260 | kfree(buf); | |
ccfe8188 | 261 | |
1da177e4 | 262 | return 0; |
8bf769eb | 263 | } |
1da177e4 | 264 | |
8bf769eb JH |
265 | static void pl2303_release(struct usb_serial *serial) |
266 | { | |
ccfe8188 | 267 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
8bf769eb | 268 | |
8bf769eb JH |
269 | kfree(spriv); |
270 | } | |
271 | ||
272 | static int pl2303_port_probe(struct usb_serial_port *port) | |
273 | { | |
274 | struct pl2303_private *priv; | |
275 | ||
276 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
277 | if (!priv) | |
278 | return -ENOMEM; | |
279 | ||
280 | spin_lock_init(&priv->lock); | |
8bf769eb JH |
281 | |
282 | usb_set_serial_port_data(port, priv); | |
283 | ||
d7be6221 JH |
284 | port->port.drain_delay = 256; |
285 | ||
8bf769eb JH |
286 | return 0; |
287 | } | |
288 | ||
289 | static int pl2303_port_remove(struct usb_serial_port *port) | |
290 | { | |
ccfe8188 | 291 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
8bf769eb | 292 | |
8bf769eb JH |
293 | kfree(priv); |
294 | ||
295 | return 0; | |
1da177e4 LT |
296 | } |
297 | ||
f45d0a5a | 298 | static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value) |
1da177e4 | 299 | { |
f45d0a5a | 300 | struct usb_device *dev = port->serial->dev; |
1da177e4 | 301 | int retval; |
3a0f43e9 | 302 | |
a6ec8245 JH |
303 | dev_dbg(&port->dev, "%s - %02x\n", __func__, value); |
304 | ||
372db8a7 TG |
305 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
306 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
307 | value, 0, NULL, 0, 100); | |
a6ec8245 JH |
308 | if (retval) |
309 | dev_err(&port->dev, "%s - failed: %d\n", __func__, retval); | |
ccfe8188 | 310 | |
1da177e4 LT |
311 | return retval; |
312 | } | |
313 | ||
59afe10e | 314 | /* |
5d85045f JH |
315 | * Returns the nearest supported baud rate that can be set directly without |
316 | * using divisors. | |
59afe10e JH |
317 | */ |
318 | static speed_t pl2303_get_supported_baud_rate(speed_t baud) | |
1da177e4 | 319 | { |
59afe10e JH |
320 | static const speed_t baud_sup[] = { |
321 | 75, 150, 300, 600, 1200, 1800, 2400, 3600, 4800, 7200, 9600, | |
322 | 14400, 19200, 28800, 38400, 57600, 115200, 230400, 460800, | |
5d85045f | 323 | 614400, 921600, 1228800, 2457600, 3000000, 6000000 |
59afe10e | 324 | }; |
1da177e4 | 325 | |
59afe10e | 326 | unsigned i; |
692ed4dd | 327 | |
7e12a6fc GKH |
328 | for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) { |
329 | if (baud_sup[i] > baud) | |
330 | break; | |
331 | } | |
692ed4dd | 332 | |
7e12a6fc GKH |
333 | if (i == ARRAY_SIZE(baud_sup)) |
334 | baud = baud_sup[i - 1]; | |
335 | else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1])) | |
336 | baud = baud_sup[i - 1]; | |
337 | else | |
338 | baud = baud_sup[i]; | |
692ed4dd | 339 | |
59afe10e JH |
340 | return baud; |
341 | } | |
342 | ||
20b4c787 JH |
343 | /* |
344 | * NOTE: If unsupported baud rates are set directly, the PL2303 seems to | |
345 | * use 9600 baud. | |
346 | */ | |
347 | static speed_t pl2303_encode_baud_rate_direct(unsigned char buf[4], | |
348 | speed_t baud) | |
349 | { | |
350 | put_unaligned_le32(baud, buf); | |
351 | ||
352 | return baud; | |
353 | } | |
354 | ||
c82c6d45 JH |
355 | static speed_t pl2303_encode_baud_rate_divisor(unsigned char buf[4], |
356 | speed_t baud) | |
357 | { | |
358 | unsigned int tmp; | |
359 | ||
360 | /* | |
361 | * Apparently the formula is: | |
362 | * baudrate = 12M * 32 / (2^buf[1]) / buf[0] | |
363 | */ | |
364 | tmp = 12000000 * 32 / baud; | |
365 | buf[3] = 0x80; | |
366 | buf[2] = 0; | |
367 | buf[1] = (tmp >= 256); | |
368 | while (tmp >= 256) { | |
369 | tmp >>= 2; | |
370 | buf[1] <<= 1; | |
371 | } | |
372 | buf[0] = tmp; | |
373 | ||
374 | return baud; | |
375 | } | |
376 | ||
59afe10e JH |
377 | static void pl2303_encode_baud_rate(struct tty_struct *tty, |
378 | struct usb_serial_port *port, | |
379 | u8 buf[4]) | |
380 | { | |
381 | struct usb_serial *serial = port->serial; | |
382 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); | |
5d85045f | 383 | speed_t baud_sup; |
59afe10e JH |
384 | speed_t baud; |
385 | ||
386 | baud = tty_get_baud_rate(tty); | |
387 | dev_dbg(&port->dev, "baud requested = %u\n", baud); | |
388 | if (!baud) | |
389 | return; | |
871996ed JH |
390 | |
391 | if (spriv->type->max_baud_rate) | |
392 | baud = min_t(speed_t, baud, spriv->type->max_baud_rate); | |
5d85045f JH |
393 | /* |
394 | * Set baud rate to nearest supported value. | |
395 | * | |
396 | * NOTE: Baud rate 500k can only be set using divisors. | |
397 | */ | |
398 | baud_sup = pl2303_get_supported_baud_rate(baud); | |
20b4c787 | 399 | |
5d85045f | 400 | if (baud == 500000) |
c82c6d45 | 401 | baud = pl2303_encode_baud_rate_divisor(buf, baud); |
5d85045f JH |
402 | else |
403 | baud = pl2303_encode_baud_rate_direct(buf, baud_sup); | |
692ed4dd | 404 | |
15e7cead | 405 | /* Save resulting baud rate */ |
b2d6d98f | 406 | tty_encode_baud_rate(tty, baud, baud); |
f84ee3b2 | 407 | dev_dbg(&port->dev, "baud set = %u\n", baud); |
15e7cead JH |
408 | } |
409 | ||
383d19c5 JH |
410 | static int pl2303_get_line_request(struct usb_serial_port *port, |
411 | unsigned char buf[7]) | |
412 | { | |
413 | struct usb_device *udev = port->serial->dev; | |
414 | int ret; | |
415 | ||
416 | ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
417 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
418 | 0, 0, buf, 7, 100); | |
419 | if (ret != 7) { | |
420 | dev_err(&port->dev, "%s - failed: %d\n", __func__, ret); | |
421 | ||
422 | if (ret > 0) | |
423 | ret = -EIO; | |
424 | ||
425 | return ret; | |
426 | } | |
427 | ||
428 | dev_dbg(&port->dev, "%s - %7ph\n", __func__, buf); | |
429 | ||
430 | return 0; | |
431 | } | |
432 | ||
433 | static int pl2303_set_line_request(struct usb_serial_port *port, | |
434 | unsigned char buf[7]) | |
435 | { | |
436 | struct usb_device *udev = port->serial->dev; | |
437 | int ret; | |
438 | ||
439 | ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | |
440 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
441 | 0, 0, buf, 7, 100); | |
442 | if (ret != 7) { | |
443 | dev_err(&port->dev, "%s - failed: %d\n", __func__, ret); | |
444 | ||
445 | if (ret > 0) | |
446 | ret = -EIO; | |
447 | ||
448 | return ret; | |
449 | } | |
450 | ||
451 | dev_dbg(&port->dev, "%s - %7ph\n", __func__, buf); | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
15e7cead JH |
456 | static void pl2303_set_termios(struct tty_struct *tty, |
457 | struct usb_serial_port *port, struct ktermios *old_termios) | |
458 | { | |
459 | struct usb_serial *serial = port->serial; | |
460 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); | |
461 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
462 | unsigned long flags; | |
15e7cead | 463 | unsigned char *buf; |
383d19c5 | 464 | int ret; |
15e7cead JH |
465 | u8 control; |
466 | ||
15e7cead JH |
467 | if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) |
468 | return; | |
469 | ||
15e7cead JH |
470 | buf = kzalloc(7, GFP_KERNEL); |
471 | if (!buf) { | |
15e7cead JH |
472 | /* Report back no change occurred */ |
473 | if (old_termios) | |
474 | tty->termios = *old_termios; | |
475 | return; | |
476 | } | |
477 | ||
383d19c5 | 478 | pl2303_get_line_request(port, buf); |
15e7cead | 479 | |
a3132499 CL |
480 | switch (C_CSIZE(tty)) { |
481 | case CS5: | |
482 | buf[6] = 5; | |
483 | break; | |
484 | case CS6: | |
485 | buf[6] = 6; | |
486 | break; | |
487 | case CS7: | |
488 | buf[6] = 7; | |
489 | break; | |
490 | default: | |
491 | case CS8: | |
492 | buf[6] = 8; | |
15e7cead | 493 | } |
a3132499 | 494 | dev_dbg(&port->dev, "data bits = %d\n", buf[6]); |
15e7cead | 495 | |
692ed4dd | 496 | /* For reference buf[0]:buf[3] baud rate value */ |
79816824 | 497 | pl2303_encode_baud_rate(tty, port, &buf[0]); |
15e7cead | 498 | |
1da177e4 LT |
499 | /* For reference buf[4]=0 is 1 stop bits */ |
500 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
501 | /* For reference buf[4]=2 is 2 stop bits */ | |
87265b45 JH |
502 | if (C_CSTOPB(tty)) { |
503 | /* | |
504 | * NOTE: Comply with "real" UARTs / RS232: | |
29cf1b72 FS |
505 | * use 1.5 instead of 2 stop bits with 5 data bits |
506 | */ | |
87265b45 | 507 | if (C_CSIZE(tty) == CS5) { |
29cf1b72 | 508 | buf[4] = 1; |
d8789b2b | 509 | dev_dbg(&port->dev, "stop bits = 1.5\n"); |
29cf1b72 FS |
510 | } else { |
511 | buf[4] = 2; | |
d8789b2b | 512 | dev_dbg(&port->dev, "stop bits = 2\n"); |
29cf1b72 | 513 | } |
1da177e4 LT |
514 | } else { |
515 | buf[4] = 0; | |
d8789b2b | 516 | dev_dbg(&port->dev, "stop bits = 1\n"); |
1da177e4 LT |
517 | } |
518 | ||
87265b45 | 519 | if (C_PARENB(tty)) { |
1da177e4 LT |
520 | /* For reference buf[5]=0 is none parity */ |
521 | /* For reference buf[5]=1 is odd parity */ | |
522 | /* For reference buf[5]=2 is even parity */ | |
523 | /* For reference buf[5]=3 is mark parity */ | |
524 | /* For reference buf[5]=4 is space parity */ | |
87265b45 | 525 | if (C_PARODD(tty)) { |
619c4354 | 526 | if (C_CMSPAR(tty)) { |
6dd81b45 | 527 | buf[5] = 3; |
d8789b2b | 528 | dev_dbg(&port->dev, "parity = mark\n"); |
6dd81b45 FS |
529 | } else { |
530 | buf[5] = 1; | |
d8789b2b | 531 | dev_dbg(&port->dev, "parity = odd\n"); |
6dd81b45 | 532 | } |
1da177e4 | 533 | } else { |
619c4354 | 534 | if (C_CMSPAR(tty)) { |
6dd81b45 | 535 | buf[5] = 4; |
d8789b2b | 536 | dev_dbg(&port->dev, "parity = space\n"); |
6dd81b45 FS |
537 | } else { |
538 | buf[5] = 2; | |
d8789b2b | 539 | dev_dbg(&port->dev, "parity = even\n"); |
6dd81b45 | 540 | } |
1da177e4 LT |
541 | } |
542 | } else { | |
543 | buf[5] = 0; | |
d8789b2b | 544 | dev_dbg(&port->dev, "parity = none\n"); |
1da177e4 LT |
545 | } |
546 | ||
623c8263 JH |
547 | /* |
548 | * Some PL2303 are known to lose bytes if you change serial settings | |
549 | * even to the same values as before. Thus we actually need to filter | |
550 | * in this specific case. | |
551 | * | |
552 | * Note that the tty_termios_hw_change check above is not sufficient | |
553 | * as a previously requested baud rate may differ from the one | |
554 | * actually used (and stored in old_termios). | |
555 | * | |
556 | * NOTE: No additional locking needed for line_settings as it is | |
557 | * only used in set_termios, which is serialised against itself. | |
558 | */ | |
559 | if (!old_termios || memcmp(buf, priv->line_settings, 7)) { | |
383d19c5 JH |
560 | ret = pl2303_set_line_request(port, buf); |
561 | if (!ret) | |
623c8263 JH |
562 | memcpy(priv->line_settings, buf, 7); |
563 | } | |
1da177e4 LT |
564 | |
565 | /* change control lines if we are switching to or from B0 */ | |
566 | spin_lock_irqsave(&priv->lock, flags); | |
567 | control = priv->line_control; | |
87265b45 | 568 | if (C_BAUD(tty) == B0) |
1da177e4 | 569 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); |
2d8f4447 | 570 | else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) |
1da177e4 LT |
571 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); |
572 | if (control != priv->line_control) { | |
573 | control = priv->line_control; | |
574 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 575 | pl2303_set_control_lines(port, control); |
1da177e4 LT |
576 | } else { |
577 | spin_unlock_irqrestore(&priv->lock, flags); | |
578 | } | |
372db8a7 | 579 | |
87265b45 | 580 | if (C_CRTSCTS(tty)) { |
23c6acb9 | 581 | if (spriv->quirks & PL2303_QUIRK_LEGACY) |
362eb026 | 582 | pl2303_vendor_write(serial, 0x0, 0x41); |
7f966ac7 JH |
583 | else |
584 | pl2303_vendor_write(serial, 0x0, 0x61); | |
715f9527 | 585 | } else { |
362eb026 | 586 | pl2303_vendor_write(serial, 0x0, 0x0); |
1da177e4 | 587 | } |
572d3138 TG |
588 | |
589 | kfree(buf); | |
590 | } | |
591 | ||
335f8514 AC |
592 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
593 | { | |
594 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
595 | unsigned long flags; | |
596 | u8 control; | |
597 | ||
598 | spin_lock_irqsave(&priv->lock, flags); | |
335f8514 AC |
599 | if (on) |
600 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
601 | else | |
602 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
603 | control = priv->line_control; | |
604 | spin_unlock_irqrestore(&priv->lock, flags); | |
ccfe8188 | 605 | |
f45d0a5a | 606 | pl2303_set_control_lines(port, control); |
335f8514 AC |
607 | } |
608 | ||
609 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 | 610 | { |
8b0127b2 | 611 | usb_serial_generic_close(port); |
572d3138 | 612 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 LT |
613 | } |
614 | ||
a509a7e4 | 615 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 616 | { |
1da177e4 | 617 | struct usb_serial *serial = port->serial; |
8bf769eb | 618 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
1da177e4 LT |
619 | int result; |
620 | ||
23c6acb9 | 621 | if (spriv->quirks & PL2303_QUIRK_LEGACY) { |
1694899f D |
622 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
623 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 624 | } else { |
1da177e4 | 625 | /* reset upstream data pipes */ |
362eb026 JH |
626 | pl2303_vendor_write(serial, 8, 0); |
627 | pl2303_vendor_write(serial, 9, 0); | |
1da177e4 LT |
628 | } |
629 | ||
1da177e4 | 630 | /* Setup termios */ |
95da310e | 631 | if (tty) |
2d8f4447 | 632 | pl2303_set_termios(tty, port, NULL); |
1da177e4 | 633 | |
372db8a7 | 634 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 635 | if (result) { |
ccfe8188 JH |
636 | dev_err(&port->dev, "failed to submit interrupt urb: %d\n", |
637 | result); | |
db6e9186 | 638 | return result; |
1da177e4 | 639 | } |
d4691c3f | 640 | |
f5230a53 | 641 | result = usb_serial_generic_open(tty, port); |
d4691c3f JH |
642 | if (result) { |
643 | usb_kill_urb(port->interrupt_in_urb); | |
644 | return result; | |
645 | } | |
646 | ||
1da177e4 LT |
647 | return 0; |
648 | } | |
649 | ||
20b9d177 | 650 | static int pl2303_tiocmset(struct tty_struct *tty, |
372db8a7 | 651 | unsigned int set, unsigned int clear) |
1da177e4 | 652 | { |
95da310e | 653 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
654 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
655 | unsigned long flags; | |
656 | u8 control; | |
6f1efd6c | 657 | int ret; |
6fdd8e8e | 658 | |
372db8a7 | 659 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
660 | if (set & TIOCM_RTS) |
661 | priv->line_control |= CONTROL_RTS; | |
662 | if (set & TIOCM_DTR) | |
663 | priv->line_control |= CONTROL_DTR; | |
664 | if (clear & TIOCM_RTS) | |
665 | priv->line_control &= ~CONTROL_RTS; | |
666 | if (clear & TIOCM_DTR) | |
667 | priv->line_control &= ~CONTROL_DTR; | |
668 | control = priv->line_control; | |
372db8a7 | 669 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 670 | |
5ddbb26b JH |
671 | ret = pl2303_set_control_lines(port, control); |
672 | if (ret) | |
673 | return usb_translate_errors(ret); | |
6f1efd6c | 674 | |
5ddbb26b | 675 | return 0; |
1da177e4 LT |
676 | } |
677 | ||
60b33c13 | 678 | static int pl2303_tiocmget(struct tty_struct *tty) |
1da177e4 | 679 | { |
95da310e | 680 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
681 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
682 | unsigned long flags; | |
683 | unsigned int mcr; | |
684 | unsigned int status; | |
685 | unsigned int result; | |
686 | ||
372db8a7 | 687 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
688 | mcr = priv->line_control; |
689 | status = priv->line_status; | |
372db8a7 | 690 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
691 | |
692 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
693 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
694 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
695 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
696 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
697 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
698 | ||
d8789b2b | 699 | dev_dbg(&port->dev, "%s - result = %x\n", __func__, result); |
1da177e4 LT |
700 | |
701 | return result; | |
702 | } | |
703 | ||
335f8514 AC |
704 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
705 | { | |
706 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
ccfe8188 | 707 | |
335f8514 AC |
708 | if (priv->line_status & UART_DCD) |
709 | return 1; | |
ccfe8188 | 710 | |
335f8514 AC |
711 | return 0; |
712 | } | |
713 | ||
824d11be | 714 | static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg) |
1da177e4 | 715 | { |
824d11be | 716 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
717 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
718 | unsigned long flags; | |
719 | unsigned int prevstatus; | |
720 | unsigned int status; | |
721 | unsigned int changed; | |
722 | ||
372db8a7 | 723 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 724 | prevstatus = priv->line_status; |
372db8a7 | 725 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
726 | |
727 | while (1) { | |
6d0cad65 | 728 | interruptible_sleep_on(&port->port.delta_msr_wait); |
1da177e4 LT |
729 | /* see if a signal did it */ |
730 | if (signal_pending(current)) | |
731 | return -ERESTARTSYS; | |
372db8a7 | 732 | |
40509ca9 JH |
733 | if (port->serial->disconnected) |
734 | return -EIO; | |
735 | ||
372db8a7 | 736 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 737 | status = priv->line_status; |
372db8a7 TG |
738 | spin_unlock_irqrestore(&priv->lock, flags); |
739 | ||
3a0f43e9 | 740 | changed = prevstatus ^ status; |
372db8a7 | 741 | |
1da177e4 LT |
742 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
743 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
744 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 745 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
746 | return 0; |
747 | } | |
748 | prevstatus = status; | |
749 | } | |
750 | /* NOTREACHED */ | |
751 | return 0; | |
752 | } | |
753 | ||
00a0d0d6 | 754 | static int pl2303_ioctl(struct tty_struct *tty, |
372db8a7 | 755 | unsigned int cmd, unsigned long arg) |
1da177e4 | 756 | { |
67b9946d | 757 | struct serial_struct ser; |
95da310e | 758 | struct usb_serial_port *port = tty->driver_data; |
d8789b2b | 759 | |
1da177e4 | 760 | switch (cmd) { |
67b9946d JT |
761 | case TIOCGSERIAL: |
762 | memset(&ser, 0, sizeof ser); | |
763 | ser.type = PORT_16654; | |
e5b1e206 | 764 | ser.line = port->minor; |
1143832e | 765 | ser.port = port->port_number; |
67b9946d JT |
766 | ser.baud_base = 460800; |
767 | ||
768 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) | |
769 | return -EFAULT; | |
770 | ||
771 | return 0; | |
3a0f43e9 | 772 | default: |
3a0f43e9 | 773 | break; |
1da177e4 | 774 | } |
ccfe8188 | 775 | |
1da177e4 LT |
776 | return -ENOIOCTLCMD; |
777 | } | |
778 | ||
95da310e | 779 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 780 | { |
95da310e | 781 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
782 | struct usb_serial *serial = port->serial; |
783 | u16 state; | |
784 | int result; | |
785 | ||
1da177e4 LT |
786 | if (break_state == 0) |
787 | state = BREAK_OFF; | |
788 | else | |
789 | state = BREAK_ON; | |
ccfe8188 | 790 | |
d8789b2b | 791 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
3a0f43e9 | 792 | state == BREAK_OFF ? "off" : "on"); |
1da177e4 | 793 | |
372db8a7 TG |
794 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
795 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
796 | 0, NULL, 0, 100); | |
1da177e4 | 797 | if (result) |
d8789b2b | 798 | dev_err(&port->dev, "error sending break = %d\n", result); |
1da177e4 LT |
799 | } |
800 | ||
97bb13ec FL |
801 | static void pl2303_update_line_status(struct usb_serial_port *port, |
802 | unsigned char *data, | |
803 | unsigned int actual_length) | |
804 | { | |
228e4105 JH |
805 | struct usb_serial *serial = port->serial; |
806 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); | |
97bb13ec | 807 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
d14fc1a7 | 808 | struct tty_struct *tty; |
97bb13ec | 809 | unsigned long flags; |
228e4105 | 810 | unsigned int status_idx = UART_STATE_INDEX; |
6020c3be JH |
811 | u8 status; |
812 | u8 delta; | |
97bb13ec | 813 | |
228e4105 JH |
814 | if (spriv->quirks & PL2303_QUIRK_UART_STATE_IDX0) |
815 | status_idx = 0; | |
97bb13ec | 816 | |
228e4105 | 817 | if (actual_length < status_idx + 1) |
a009b75a | 818 | return; |
97bb13ec | 819 | |
6020c3be JH |
820 | status = data[status_idx]; |
821 | ||
3a0f43e9 | 822 | /* Save off the uart status for others to look at */ |
97bb13ec | 823 | spin_lock_irqsave(&priv->lock, flags); |
6020c3be JH |
824 | delta = priv->line_status ^ status; |
825 | priv->line_status = status; | |
97bb13ec | 826 | spin_unlock_irqrestore(&priv->lock, flags); |
ccfe8188 | 827 | |
6020c3be | 828 | if (status & UART_BREAK_ERROR) |
430eb0d2 | 829 | usb_serial_handle_break(port); |
ccfe8188 | 830 | |
6d0cad65 | 831 | wake_up_interruptible(&port->port.delta_msr_wait); |
d14fc1a7 | 832 | |
6020c3be JH |
833 | if (delta & UART_DCD) { |
834 | tty = tty_port_tty_get(&port->port); | |
835 | if (tty) { | |
836 | usb_serial_handle_dcd_change(port, tty, | |
837 | status & UART_DCD); | |
838 | tty_kref_put(tty); | |
839 | } | |
840 | } | |
97bb13ec | 841 | } |
1da177e4 | 842 | |
7d12e780 | 843 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 844 | { |
cdc97792 | 845 | struct usb_serial_port *port = urb->context; |
1da177e4 | 846 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 847 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
848 | int status = urb->status; |
849 | int retval; | |
1da177e4 | 850 | |
461d696a | 851 | switch (status) { |
1da177e4 LT |
852 | case 0: |
853 | /* success */ | |
854 | break; | |
855 | case -ECONNRESET: | |
856 | case -ENOENT: | |
857 | case -ESHUTDOWN: | |
858 | /* this urb is terminated, clean up */ | |
d8789b2b GKH |
859 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
860 | __func__, status); | |
1da177e4 LT |
861 | return; |
862 | default: | |
d8789b2b GKH |
863 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
864 | __func__, status); | |
1da177e4 LT |
865 | goto exit; |
866 | } | |
867 | ||
59d33f2f | 868 | usb_serial_debug_data(&port->dev, __func__, |
372db8a7 TG |
869 | urb->actual_length, urb->transfer_buffer); |
870 | ||
97bb13ec | 871 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 872 | |
1da177e4 | 873 | exit: |
461d696a | 874 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
ccfe8188 | 875 | if (retval) { |
d8789b2b | 876 | dev_err(&port->dev, |
372db8a7 | 877 | "%s - usb_submit_urb failed with result %d\n", |
441b62c1 | 878 | __func__, retval); |
ccfe8188 | 879 | } |
1da177e4 LT |
880 | } |
881 | ||
f08e07ac | 882 | static void pl2303_process_read_urb(struct urb *urb) |
d4fc4a7b | 883 | { |
f08e07ac JH |
884 | struct usb_serial_port *port = urb->context; |
885 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d4fc4a7b | 886 | unsigned char *data = urb->transfer_buffer; |
d4fc4a7b | 887 | char tty_flag = TTY_NORMAL; |
f08e07ac JH |
888 | unsigned long flags; |
889 | u8 line_status; | |
890 | int i; | |
891 | ||
892 | /* update line status */ | |
893 | spin_lock_irqsave(&priv->lock, flags); | |
894 | line_status = priv->line_status; | |
895 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
896 | spin_unlock_irqrestore(&priv->lock, flags); | |
f08e07ac JH |
897 | |
898 | if (!urb->actual_length) | |
899 | return; | |
900 | ||
ccfe8188 JH |
901 | /* |
902 | * Break takes precedence over parity, which takes precedence over | |
903 | * framing errors. | |
904 | */ | |
d4fc4a7b AC |
905 | if (line_status & UART_BREAK_ERROR) |
906 | tty_flag = TTY_BREAK; | |
907 | else if (line_status & UART_PARITY_ERROR) | |
908 | tty_flag = TTY_PARITY; | |
909 | else if (line_status & UART_FRAME_ERROR) | |
910 | tty_flag = TTY_FRAME; | |
d4fc4a7b | 911 | |
3ba19fe3 JH |
912 | if (tty_flag != TTY_NORMAL) |
913 | dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, | |
914 | tty_flag); | |
d4fc4a7b AC |
915 | /* overrun is special, not associated with a char */ |
916 | if (line_status & UART_OVERRUN_ERROR) | |
92a19f9c | 917 | tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); |
9388e2e7 | 918 | |
d45cc8df | 919 | if (port->port.console && port->sysrq) { |
d4fc4a7b | 920 | for (i = 0; i < urb->actual_length; ++i) |
6ee9f4b4 | 921 | if (!usb_serial_handle_sysrq_char(port, data[i])) |
92a19f9c JS |
922 | tty_insert_flip_char(&port->port, data[i], |
923 | tty_flag); | |
d45cc8df | 924 | } else { |
2f693357 | 925 | tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, |
d45cc8df | 926 | urb->actual_length); |
9388e2e7 | 927 | } |
1da177e4 | 928 | |
2e124b4a | 929 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
930 | } |
931 | ||
572d3138 TG |
932 | static struct usb_serial_driver pl2303_device = { |
933 | .driver = { | |
934 | .owner = THIS_MODULE, | |
935 | .name = "pl2303", | |
936 | }, | |
937 | .id_table = id_table, | |
572d3138 | 938 | .num_ports = 1, |
7919c2fd | 939 | .bulk_in_size = 256, |
3efeaff6 | 940 | .bulk_out_size = 256, |
572d3138 TG |
941 | .open = pl2303_open, |
942 | .close = pl2303_close, | |
ccfe8188 | 943 | .dtr_rts = pl2303_dtr_rts, |
335f8514 | 944 | .carrier_raised = pl2303_carrier_raised, |
572d3138 TG |
945 | .ioctl = pl2303_ioctl, |
946 | .break_ctl = pl2303_break_ctl, | |
947 | .set_termios = pl2303_set_termios, | |
948 | .tiocmget = pl2303_tiocmget, | |
949 | .tiocmset = pl2303_tiocmset, | |
824d11be | 950 | .tiocmiwait = pl2303_tiocmiwait, |
f08e07ac | 951 | .process_read_urb = pl2303_process_read_urb, |
572d3138 | 952 | .read_int_callback = pl2303_read_int_callback, |
228e4105 | 953 | .probe = pl2303_probe, |
572d3138 | 954 | .attach = pl2303_startup, |
f9c99bb8 | 955 | .release = pl2303_release, |
8bf769eb JH |
956 | .port_probe = pl2303_port_probe, |
957 | .port_remove = pl2303_port_remove, | |
572d3138 | 958 | }; |
1da177e4 | 959 | |
f667ddad AS |
960 | static struct usb_serial_driver * const serial_drivers[] = { |
961 | &pl2303_device, NULL | |
962 | }; | |
963 | ||
68e24113 | 964 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 | 965 | |
ccfe8188 | 966 | MODULE_DESCRIPTION("Prolific PL2303 USB to serial adaptor driver"); |
1da177e4 | 967 | MODULE_LICENSE("GPL"); |