USB: CP210x Add new device ID
[deliverable/linux.git] / drivers / usb / serial / cp210x.c
CommitLineData
1da177e4 1/*
4cc27bd6 2 * Silicon Laboratories CP210x USB to RS232 serial adaptor driver
1da177e4
LT
3 *
4 * Copyright (C) 2005 Craig Shelley (craig@microtron.org.uk)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 as published by the Free Software Foundation.
9 *
39a66b8d
CS
10 * Support to set flow control line levels using TIOCMGET and TIOCMSET
11 * thanks to Karl Hiramoto karl@hiramoto.org. RTSCTS hardware flow
12 * control thanks to Munir Nassar nassarmu@real-time.com
13 *
1da177e4
LT
14 */
15
1da177e4
LT
16#include <linux/kernel.h>
17#include <linux/errno.h>
18#include <linux/slab.h>
19#include <linux/tty.h>
20#include <linux/tty_flip.h>
21#include <linux/module.h>
22#include <linux/moduleparam.h>
23#include <linux/usb.h>
ff7eb602 24#include <linux/uaccess.h>
a969888c 25#include <linux/usb/serial.h>
1da177e4
LT
26
27/*
28 * Version Information
29 */
93ef1f1f 30#define DRIVER_VERSION "v0.09"
4cc27bd6 31#define DRIVER_DESC "Silicon Labs CP210x RS232 serial adaptor driver"
1da177e4
LT
32
33/*
34 * Function Prototypes
35 */
a509a7e4 36static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *);
4cc27bd6
CS
37static void cp210x_close(struct usb_serial_port *);
38static void cp210x_get_termios(struct tty_struct *,
d2ad67b3 39 struct usb_serial_port *port);
4cc27bd6 40static void cp210x_get_termios_port(struct usb_serial_port *port,
d2ad67b3 41 unsigned int *cflagp, unsigned int *baudp);
4cc27bd6 42static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *,
95da310e 43 struct ktermios*);
4cc27bd6
CS
44static int cp210x_tiocmget(struct tty_struct *, struct file *);
45static int cp210x_tiocmset(struct tty_struct *, struct file *,
39a66b8d 46 unsigned int, unsigned int);
4cc27bd6 47static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *,
d2ad67b3 48 unsigned int, unsigned int);
4cc27bd6
CS
49static void cp210x_break_ctl(struct tty_struct *, int);
50static int cp210x_startup(struct usb_serial *);
d94c7bd4
AC
51static void cp210x_dtr_rts(struct usb_serial_port *p, int on);
52static int cp210x_carrier_raised(struct usb_serial_port *p);
1da177e4 53
1da177e4
LT
54static int debug;
55
7d40d7e8 56static const struct usb_device_id id_table[] = {
5091b587 57 { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */
59fba744 58 { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */
b7c7cbc8 59 { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */
1f4f714f 60 { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */
b7c7cbc8 61 { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */
eefd9029
CS
62 { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */
63 { USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */
198b9517 64 { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */
014840ec 65 { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */
59fba744 66 { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */
198b9517 67 { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */
e988fc8a
CS
68 { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */
69 { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */
b7c7cbc8 70 { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */
0601e116
AK
71 { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */
72 { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */
5de8b3ac 73 { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */
59224f53 74 { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */
eefd9029
CS
75 { USB_DEVICE(0x10C4, 0x8044) }, /* Cygnal Debug Adapter */
76 { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */
92f5cae2 77 { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */
9a18e75f 78 { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */
212a4b4e 79 { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */
eefd9029 80 { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */
e988fc8a
CS
81 { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */
82 { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */
92f5cae2 83 { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */
e988fc8a 84 { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */
ba0f332c 85 { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */
e988fc8a 86 { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */
8bf16ba7 87 { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */
eefd9029 88 { USB_DEVICE(0x10C4, 0x8149) }, /* West Mountain Radio Computerized Battery Analyzer */
fc4bd64c
JH
89 { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */
90 { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */
e988fc8a 91 { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */
eefd9029 92 { USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */
c6535668 93 { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */
96623697 94 { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */
59fba744 95 { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */
eefd9029 96 { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */
78001e3d
BS
97 { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */
98 { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */
8be27c2d 99 { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */
bd07c551 100 { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */
b7c7cbc8 101 { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */
78001e3d 102 { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */
877e262c 103 { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */
95bec45d 104 { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */
bd07c551 105 { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesys ETRX2USB */
b7c7cbc8 106 { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */
ba0f332c 107 { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */
8bf16ba7 108 { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */
881e3c98 109 { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */
8bf16ba7 110 { USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */
d23bac9f 111 { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */
541e05ec 112 { USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */
e988fc8a 113 { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
61926b97 114 { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */
eefd9029 115 { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */
5de8b3ac
CS
116 { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */
117 { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */
118 { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */
119 { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */
ebaf494e 120 { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */
b7c7cbc8 121 { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */
e05998d5 122 { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */
b7c7cbc8 123 { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */
5de8b3ac 124 { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */
b0ce84d5 125 { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */
356c5a48
AIB
126 { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */
127 { USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */
128 { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */
129 { USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */
541e05ec
CS
130 { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */
131 { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */
132 { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */
133 { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */
39a66b8d 134 { } /* Terminating Entry */
1da177e4
LT
135};
136
ff7eb602 137MODULE_DEVICE_TABLE(usb, id_table);
1da177e4 138
4cc27bd6
CS
139static struct usb_driver cp210x_driver = {
140 .name = "cp210x",
1da177e4
LT
141 .probe = usb_serial_probe,
142 .disconnect = usb_serial_disconnect,
143 .id_table = id_table,
ba9dc657 144 .no_dynamic_id = 1,
1da177e4
LT
145};
146
4cc27bd6 147static struct usb_serial_driver cp210x_device = {
18fcac35
GKH
148 .driver = {
149 .owner = THIS_MODULE,
4cc27bd6 150 .name = "cp210x",
18fcac35 151 },
4cc27bd6 152 .usb_driver = &cp210x_driver,
1da177e4 153 .id_table = id_table,
1da177e4 154 .num_ports = 1,
aea006b9 155 .bulk_in_size = 256,
d4e598f6 156 .bulk_out_size = 256,
4cc27bd6
CS
157 .open = cp210x_open,
158 .close = cp210x_close,
159 .break_ctl = cp210x_break_ctl,
160 .set_termios = cp210x_set_termios,
161 .tiocmget = cp210x_tiocmget,
162 .tiocmset = cp210x_tiocmset,
163 .attach = cp210x_startup,
d94c7bd4
AC
164 .dtr_rts = cp210x_dtr_rts,
165 .carrier_raised = cp210x_carrier_raised
1da177e4
LT
166};
167
39a66b8d 168/* Config request types */
1da177e4
LT
169#define REQTYPE_HOST_TO_DEVICE 0x41
170#define REQTYPE_DEVICE_TO_HOST 0xc1
171
93ef1f1f
CS
172/* Config request codes */
173#define CP210X_IFC_ENABLE 0x00
174#define CP210X_SET_BAUDDIV 0x01
175#define CP210X_GET_BAUDDIV 0x02
176#define CP210X_SET_LINE_CTL 0x03
177#define CP210X_GET_LINE_CTL 0x04
178#define CP210X_SET_BREAK 0x05
179#define CP210X_IMM_CHAR 0x06
180#define CP210X_SET_MHS 0x07
181#define CP210X_GET_MDMSTS 0x08
182#define CP210X_SET_XON 0x09
183#define CP210X_SET_XOFF 0x0A
184#define CP210X_SET_EVENTMASK 0x0B
185#define CP210X_GET_EVENTMASK 0x0C
186#define CP210X_SET_CHAR 0x0D
187#define CP210X_GET_CHARS 0x0E
188#define CP210X_GET_PROPS 0x0F
189#define CP210X_GET_COMM_STATUS 0x10
190#define CP210X_RESET 0x11
191#define CP210X_PURGE 0x12
192#define CP210X_SET_FLOW 0x13
193#define CP210X_GET_FLOW 0x14
194#define CP210X_EMBED_EVENTS 0x15
195#define CP210X_GET_EVENTSTATE 0x16
196#define CP210X_SET_CHARS 0x19
197
198/* CP210X_IFC_ENABLE */
1da177e4
LT
199#define UART_ENABLE 0x0001
200#define UART_DISABLE 0x0000
201
93ef1f1f 202/* CP210X_(SET|GET)_BAUDDIV */
1da177e4
LT
203#define BAUD_RATE_GEN_FREQ 0x384000
204
93ef1f1f 205/* CP210X_(SET|GET)_LINE_CTL */
1da177e4 206#define BITS_DATA_MASK 0X0f00
39a66b8d 207#define BITS_DATA_5 0X0500
1da177e4
LT
208#define BITS_DATA_6 0X0600
209#define BITS_DATA_7 0X0700
210#define BITS_DATA_8 0X0800
211#define BITS_DATA_9 0X0900
212
213#define BITS_PARITY_MASK 0x00f0
214#define BITS_PARITY_NONE 0x0000
215#define BITS_PARITY_ODD 0x0010
216#define BITS_PARITY_EVEN 0x0020
217#define BITS_PARITY_MARK 0x0030
218#define BITS_PARITY_SPACE 0x0040
219
220#define BITS_STOP_MASK 0x000f
221#define BITS_STOP_1 0x0000
222#define BITS_STOP_1_5 0x0001
223#define BITS_STOP_2 0x0002
39a66b8d 224
93ef1f1f 225/* CP210X_SET_BREAK */
72916791
CS
226#define BREAK_ON 0x0001
227#define BREAK_OFF 0x0000
1da177e4 228
93ef1f1f 229/* CP210X_(SET_MHS|GET_MDMSTS) */
39a66b8d
CS
230#define CONTROL_DTR 0x0001
231#define CONTROL_RTS 0x0002
232#define CONTROL_CTS 0x0010
233#define CONTROL_DSR 0x0020
234#define CONTROL_RING 0x0040
235#define CONTROL_DCD 0x0080
236#define CONTROL_WRITE_DTR 0x0100
237#define CONTROL_WRITE_RTS 0x0200
1da177e4 238
39a66b8d 239/*
4cc27bd6
CS
240 * cp210x_get_config
241 * Reads from the CP210x configuration registers
39a66b8d
CS
242 * 'size' is specified in bytes.
243 * 'data' is a pointer to a pre-allocated array of integers large
244 * enough to hold 'size' bytes (with 4 bytes to each integer)
245 */
4cc27bd6 246static int cp210x_get_config(struct usb_serial_port *port, u8 request,
39a66b8d 247 unsigned int *data, int size)
1da177e4
LT
248{
249 struct usb_serial *serial = port->serial;
53ebb3b8 250 __le32 *buf;
39a66b8d
CS
251 int result, i, length;
252
253 /* Number of integers required to contain the array */
254 length = (((size - 1) | 3) + 1)/4;
255
53ebb3b8 256 buf = kcalloc(length, sizeof(__le32), GFP_KERNEL);
39a66b8d 257 if (!buf) {
441b62c1 258 dev_err(&port->dev, "%s - out of memory.\n", __func__);
39a66b8d
CS
259 return -ENOMEM;
260 }
1da177e4 261
39a66b8d 262 /* Issue the request, attempting to read 'size' bytes */
ff7eb602 263 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
1da177e4 264 request, REQTYPE_DEVICE_TO_HOST, 0x0000,
39a66b8d 265 0, buf, size, 300);
1da177e4 266
39a66b8d 267 /* Convert data into an array of integers */
ff7eb602 268 for (i = 0; i < length; i++)
39a66b8d 269 data[i] = le32_to_cpu(buf[i]);
1da177e4 270
39a66b8d 271 kfree(buf);
1da177e4 272
39a66b8d 273 if (result != size) {
97324955 274 dbg("%s - Unable to send config request, "
39a66b8d 275 "request=0x%x size=%d result=%d\n",
441b62c1 276 __func__, request, size, result);
39a66b8d
CS
277 return -EPROTO;
278 }
1da177e4 279
39a66b8d 280 return 0;
1da177e4
LT
281}
282
39a66b8d 283/*
4cc27bd6
CS
284 * cp210x_set_config
285 * Writes to the CP210x configuration registers
39a66b8d
CS
286 * Values less than 16 bits wide are sent directly
287 * 'size' is specified in bytes.
288 */
4cc27bd6 289static int cp210x_set_config(struct usb_serial_port *port, u8 request,
39a66b8d 290 unsigned int *data, int size)
1da177e4
LT
291{
292 struct usb_serial *serial = port->serial;
53ebb3b8 293 __le32 *buf;
39a66b8d 294 int result, i, length;
1da177e4 295
39a66b8d
CS
296 /* Number of integers required to contain the array */
297 length = (((size - 1) | 3) + 1)/4;
298
53ebb3b8 299 buf = kmalloc(length * sizeof(__le32), GFP_KERNEL);
39a66b8d
CS
300 if (!buf) {
301 dev_err(&port->dev, "%s - out of memory.\n",
441b62c1 302 __func__);
39a66b8d
CS
303 return -ENOMEM;
304 }
305
306 /* Array of integers into bytes */
307 for (i = 0; i < length; i++)
308 buf[i] = cpu_to_le32(data[i]);
309
310 if (size > 2) {
ff7eb602 311 result = usb_control_msg(serial->dev,
39a66b8d
CS
312 usb_sndctrlpipe(serial->dev, 0),
313 request, REQTYPE_HOST_TO_DEVICE, 0x0000,
314 0, buf, size, 300);
315 } else {
ff7eb602 316 result = usb_control_msg(serial->dev,
39a66b8d
CS
317 usb_sndctrlpipe(serial->dev, 0),
318 request, REQTYPE_HOST_TO_DEVICE, data[0],
319 0, NULL, 0, 300);
1da177e4
LT
320 }
321
39a66b8d
CS
322 kfree(buf);
323
324 if ((size > 2 && result != size) || result < 0) {
97324955 325 dbg("%s - Unable to send request, "
39a66b8d 326 "request=0x%x size=%d result=%d\n",
441b62c1 327 __func__, request, size, result);
39a66b8d
CS
328 return -EPROTO;
329 }
1da177e4
LT
330
331 return 0;
332}
333
39a66b8d 334/*
4cc27bd6
CS
335 * cp210x_set_config_single
336 * Convenience function for calling cp210x_set_config on single data values
39a66b8d
CS
337 * without requiring an integer pointer
338 */
4cc27bd6 339static inline int cp210x_set_config_single(struct usb_serial_port *port,
39a66b8d
CS
340 u8 request, unsigned int data)
341{
4cc27bd6 342 return cp210x_set_config(port, request, &data, 2);
39a66b8d
CS
343}
344
ef8b6bcb 345/*
4cc27bd6 346 * cp210x_quantise_baudrate
ef8b6bcb
CS
347 * Quantises the baud rate as per AN205 Table 1
348 */
4cc27bd6 349static unsigned int cp210x_quantise_baudrate(unsigned int baud) {
ef8b6bcb
CS
350 if (baud <= 56) baud = 0;
351 else if (baud <= 300) baud = 300;
352 else if (baud <= 600) baud = 600;
353 else if (baud <= 1200) baud = 1200;
354 else if (baud <= 1800) baud = 1800;
355 else if (baud <= 2400) baud = 2400;
356 else if (baud <= 4000) baud = 4000;
357 else if (baud <= 4803) baud = 4800;
358 else if (baud <= 7207) baud = 7200;
359 else if (baud <= 9612) baud = 9600;
360 else if (baud <= 14428) baud = 14400;
361 else if (baud <= 16062) baud = 16000;
362 else if (baud <= 19250) baud = 19200;
363 else if (baud <= 28912) baud = 28800;
364 else if (baud <= 38601) baud = 38400;
365 else if (baud <= 51558) baud = 51200;
366 else if (baud <= 56280) baud = 56000;
367 else if (baud <= 58053) baud = 57600;
368 else if (baud <= 64111) baud = 64000;
369 else if (baud <= 77608) baud = 76800;
370 else if (baud <= 117028) baud = 115200;
371 else if (baud <= 129347) baud = 128000;
372 else if (baud <= 156868) baud = 153600;
373 else if (baud <= 237832) baud = 230400;
374 else if (baud <= 254234) baud = 250000;
375 else if (baud <= 273066) baud = 256000;
376 else if (baud <= 491520) baud = 460800;
377 else if (baud <= 567138) baud = 500000;
378 else if (baud <= 670254) baud = 576000;
379 else if (baud <= 1053257) baud = 921600;
380 else if (baud <= 1474560) baud = 1228800;
381 else if (baud <= 2457600) baud = 1843200;
382 else baud = 3686400;
383 return baud;
384}
385
a509a7e4 386static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port)
1da177e4 387{
1da177e4
LT
388 int result;
389
441b62c1 390 dbg("%s - port %d", __func__, port->number);
1da177e4 391
4cc27bd6 392 if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) {
1da177e4 393 dev_err(&port->dev, "%s - Unable to enable UART\n",
441b62c1 394 __func__);
1da177e4
LT
395 return -EPROTO;
396 }
397
a9013176 398 result = usb_serial_generic_open(tty, port);
2db6c769 399 if (result)
1da177e4 400 return result;
1da177e4 401
39a66b8d 402 /* Configure the termios structure */
4cc27bd6 403 cp210x_get_termios(tty, port);
1da177e4
LT
404 return 0;
405}
406
4cc27bd6 407static void cp210x_close(struct usb_serial_port *port)
1da177e4 408{
441b62c1 409 dbg("%s - port %d", __func__, port->number);
1da177e4 410
f26788da 411 usb_serial_generic_close(port);
1da177e4 412
95bef012
ON
413 mutex_lock(&port->serial->disc_mutex);
414 if (!port->serial->disconnected)
4cc27bd6 415 cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE);
95bef012 416 mutex_unlock(&port->serial->disc_mutex);
1da177e4
LT
417}
418
39a66b8d 419/*
4cc27bd6 420 * cp210x_get_termios
39a66b8d
CS
421 * Reads the baud rate, data bits, parity, stop bits and flow control mode
422 * from the device, corrects any unsupported values, and configures the
423 * termios structure to reflect the state of the device
424 */
4cc27bd6 425static void cp210x_get_termios(struct tty_struct *tty,
d2ad67b3
V
426 struct usb_serial_port *port)
427{
428 unsigned int baud;
429
430 if (tty) {
4cc27bd6 431 cp210x_get_termios_port(tty->driver_data,
d2ad67b3
V
432 &tty->termios->c_cflag, &baud);
433 tty_encode_baud_rate(tty, baud, baud);
434 }
435
436 else {
437 unsigned int cflag;
438 cflag = 0;
4cc27bd6 439 cp210x_get_termios_port(port, &cflag, &baud);
d2ad67b3
V
440 }
441}
442
443/*
4cc27bd6
CS
444 * cp210x_get_termios_port
445 * This is the heart of cp210x_get_termios which always uses a &usb_serial_port.
d2ad67b3 446 */
4cc27bd6 447static void cp210x_get_termios_port(struct usb_serial_port *port,
d2ad67b3 448 unsigned int *cflagp, unsigned int *baudp)
1da177e4 449{
39a66b8d 450 unsigned int cflag, modem_ctl[4];
b2bdd1f5
HH
451 unsigned int baud;
452 unsigned int bits;
1da177e4 453
441b62c1 454 dbg("%s - port %d", __func__, port->number);
1da177e4 455
4cc27bd6 456 cp210x_get_config(port, CP210X_GET_BAUDDIV, &baud, 2);
39a66b8d 457 /* Convert to baudrate */
1da177e4 458 if (baud)
4cc27bd6 459 baud = cp210x_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud);
1da177e4 460
441b62c1 461 dbg("%s - baud rate = %d", __func__, baud);
d2ad67b3 462 *baudp = baud;
9ab0f202 463
d2ad67b3 464 cflag = *cflagp;
1da177e4 465
4cc27bd6 466 cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2);
1da177e4 467 cflag &= ~CSIZE;
ff7eb602
AC
468 switch (bits & BITS_DATA_MASK) {
469 case BITS_DATA_5:
470 dbg("%s - data bits = 5", __func__);
471 cflag |= CS5;
472 break;
473 case BITS_DATA_6:
474 dbg("%s - data bits = 6", __func__);
475 cflag |= CS6;
476 break;
477 case BITS_DATA_7:
478 dbg("%s - data bits = 7", __func__);
479 cflag |= CS7;
480 break;
481 case BITS_DATA_8:
482 dbg("%s - data bits = 8", __func__);
483 cflag |= CS8;
484 break;
485 case BITS_DATA_9:
486 dbg("%s - data bits = 9 (not supported, using 8 data bits)",
487 __func__);
488 cflag |= CS8;
489 bits &= ~BITS_DATA_MASK;
490 bits |= BITS_DATA_8;
4cc27bd6 491 cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
ff7eb602
AC
492 break;
493 default:
494 dbg("%s - Unknown number of data bits, using 8", __func__);
495 cflag |= CS8;
496 bits &= ~BITS_DATA_MASK;
497 bits |= BITS_DATA_8;
4cc27bd6 498 cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
ff7eb602 499 break;
1da177e4
LT
500 }
501
ff7eb602
AC
502 switch (bits & BITS_PARITY_MASK) {
503 case BITS_PARITY_NONE:
504 dbg("%s - parity = NONE", __func__);
505 cflag &= ~PARENB;
506 break;
507 case BITS_PARITY_ODD:
508 dbg("%s - parity = ODD", __func__);
509 cflag |= (PARENB|PARODD);
510 break;
511 case BITS_PARITY_EVEN:
512 dbg("%s - parity = EVEN", __func__);
513 cflag &= ~PARODD;
514 cflag |= PARENB;
515 break;
516 case BITS_PARITY_MARK:
517 dbg("%s - parity = MARK (not supported, disabling parity)",
518 __func__);
519 cflag &= ~PARENB;
520 bits &= ~BITS_PARITY_MASK;
4cc27bd6 521 cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
ff7eb602
AC
522 break;
523 case BITS_PARITY_SPACE:
524 dbg("%s - parity = SPACE (not supported, disabling parity)",
525 __func__);
526 cflag &= ~PARENB;
527 bits &= ~BITS_PARITY_MASK;
4cc27bd6 528 cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
ff7eb602
AC
529 break;
530 default:
531 dbg("%s - Unknown parity mode, disabling parity", __func__);
532 cflag &= ~PARENB;
533 bits &= ~BITS_PARITY_MASK;
4cc27bd6 534 cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
ff7eb602 535 break;
1da177e4
LT
536 }
537
538 cflag &= ~CSTOPB;
ff7eb602
AC
539 switch (bits & BITS_STOP_MASK) {
540 case BITS_STOP_1:
541 dbg("%s - stop bits = 1", __func__);
542 break;
543 case BITS_STOP_1_5:
544 dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)",
545 __func__);
546 bits &= ~BITS_STOP_MASK;
4cc27bd6 547 cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
ff7eb602
AC
548 break;
549 case BITS_STOP_2:
550 dbg("%s - stop bits = 2", __func__);
551 cflag |= CSTOPB;
552 break;
553 default:
554 dbg("%s - Unknown number of stop bits, using 1 stop bit",
555 __func__);
556 bits &= ~BITS_STOP_MASK;
4cc27bd6 557 cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
ff7eb602 558 break;
1da177e4
LT
559 }
560
4cc27bd6 561 cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16);
39a66b8d 562 if (modem_ctl[0] & 0x0008) {
441b62c1 563 dbg("%s - flow control = CRTSCTS", __func__);
39a66b8d
CS
564 cflag |= CRTSCTS;
565 } else {
441b62c1 566 dbg("%s - flow control = NONE", __func__);
39a66b8d
CS
567 cflag &= ~CRTSCTS;
568 }
569
d2ad67b3 570 *cflagp = cflag;
1da177e4
LT
571}
572
4cc27bd6 573static void cp210x_set_termios(struct tty_struct *tty,
95da310e 574 struct usb_serial_port *port, struct ktermios *old_termios)
1da177e4 575{
9ab0f202 576 unsigned int cflag, old_cflag;
b2bdd1f5 577 unsigned int baud = 0, bits;
39a66b8d 578 unsigned int modem_ctl[4];
1da177e4 579
441b62c1 580 dbg("%s - port %d", __func__, port->number);
1da177e4 581
95da310e 582 if (!tty)
1da177e4 583 return;
9ab0f202 584
95da310e
AC
585 tty->termios->c_cflag &= ~CMSPAR;
586 cflag = tty->termios->c_cflag;
01e96d28 587 old_cflag = old_termios->c_cflag;
4cc27bd6 588 baud = cp210x_quantise_baudrate(tty_get_baud_rate(tty));
1da177e4
LT
589
590 /* If the baud rate is to be updated*/
ef8b6bcb
CS
591 if (baud != tty_termios_baud_rate(old_termios) && baud != 0) {
592 dbg("%s - Setting baud rate to %d baud", __func__,
593 baud);
4cc27bd6 594 if (cp210x_set_config_single(port, CP210X_SET_BAUDDIV,
ef8b6bcb 595 ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) {
759f3634 596 dbg("Baud rate requested not supported by device");
ef8b6bcb 597 baud = tty_termios_baud_rate(old_termios);
1da177e4
LT
598 }
599 }
9ab0f202 600 /* Report back the resulting baud rate */
95da310e 601 tty_encode_baud_rate(tty, baud, baud);
1da177e4 602
39a66b8d 603 /* If the number of data bits is to be updated */
1da177e4 604 if ((cflag & CSIZE) != (old_cflag & CSIZE)) {
4cc27bd6 605 cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2);
1da177e4
LT
606 bits &= ~BITS_DATA_MASK;
607 switch (cflag & CSIZE) {
ff7eb602
AC
608 case CS5:
609 bits |= BITS_DATA_5;
610 dbg("%s - data bits = 5", __func__);
611 break;
612 case CS6:
613 bits |= BITS_DATA_6;
614 dbg("%s - data bits = 6", __func__);
615 break;
616 case CS7:
617 bits |= BITS_DATA_7;
618 dbg("%s - data bits = 7", __func__);
619 break;
620 case CS8:
621 bits |= BITS_DATA_8;
622 dbg("%s - data bits = 8", __func__);
623 break;
624 /*case CS9:
625 bits |= BITS_DATA_9;
626 dbg("%s - data bits = 9", __func__);
627 break;*/
628 default:
4cc27bd6 629 dbg("cp210x driver does not "
1da177e4
LT
630 "support the number of bits requested,"
631 " using 8 bit mode\n");
632 bits |= BITS_DATA_8;
633 break;
634 }
4cc27bd6 635 if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2))
97324955 636 dbg("Number of data bits requested "
1da177e4
LT
637 "not supported by device\n");
638 }
639
640 if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) {
4cc27bd6 641 cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2);
1da177e4
LT
642 bits &= ~BITS_PARITY_MASK;
643 if (cflag & PARENB) {
644 if (cflag & PARODD) {
645 bits |= BITS_PARITY_ODD;
441b62c1 646 dbg("%s - parity = ODD", __func__);
1da177e4
LT
647 } else {
648 bits |= BITS_PARITY_EVEN;
441b62c1 649 dbg("%s - parity = EVEN", __func__);
1da177e4
LT
650 }
651 }
4cc27bd6 652 if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2))
97324955 653 dbg("Parity mode not supported "
1da177e4
LT
654 "by device\n");
655 }
656
657 if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) {
4cc27bd6 658 cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2);
1da177e4
LT
659 bits &= ~BITS_STOP_MASK;
660 if (cflag & CSTOPB) {
661 bits |= BITS_STOP_2;
441b62c1 662 dbg("%s - stop bits = 2", __func__);
1da177e4
LT
663 } else {
664 bits |= BITS_STOP_1;
441b62c1 665 dbg("%s - stop bits = 1", __func__);
1da177e4 666 }
4cc27bd6 667 if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2))
97324955 668 dbg("Number of stop bits requested "
1da177e4
LT
669 "not supported by device\n");
670 }
39a66b8d
CS
671
672 if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) {
4cc27bd6 673 cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16);
39a66b8d 674 dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x",
441b62c1 675 __func__, modem_ctl[0], modem_ctl[1],
39a66b8d
CS
676 modem_ctl[2], modem_ctl[3]);
677
678 if (cflag & CRTSCTS) {
679 modem_ctl[0] &= ~0x7B;
680 modem_ctl[0] |= 0x09;
681 modem_ctl[1] = 0x80;
441b62c1 682 dbg("%s - flow control = CRTSCTS", __func__);
39a66b8d
CS
683 } else {
684 modem_ctl[0] &= ~0x7B;
685 modem_ctl[0] |= 0x01;
686 modem_ctl[1] |= 0x40;
441b62c1 687 dbg("%s - flow control = NONE", __func__);
39a66b8d
CS
688 }
689
690 dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x",
441b62c1 691 __func__, modem_ctl[0], modem_ctl[1],
39a66b8d 692 modem_ctl[2], modem_ctl[3]);
4cc27bd6 693 cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16);
39a66b8d
CS
694 }
695
696}
697
4cc27bd6 698static int cp210x_tiocmset (struct tty_struct *tty, struct file *file,
39a66b8d
CS
699 unsigned int set, unsigned int clear)
700{
95da310e 701 struct usb_serial_port *port = tty->driver_data;
4cc27bd6 702 return cp210x_tiocmset_port(port, file, set, clear);
d2ad67b3
V
703}
704
4cc27bd6 705static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file,
d2ad67b3
V
706 unsigned int set, unsigned int clear)
707{
b2bdd1f5 708 unsigned int control = 0;
39a66b8d 709
441b62c1 710 dbg("%s - port %d", __func__, port->number);
39a66b8d
CS
711
712 if (set & TIOCM_RTS) {
713 control |= CONTROL_RTS;
714 control |= CONTROL_WRITE_RTS;
715 }
716 if (set & TIOCM_DTR) {
717 control |= CONTROL_DTR;
718 control |= CONTROL_WRITE_DTR;
719 }
720 if (clear & TIOCM_RTS) {
721 control &= ~CONTROL_RTS;
722 control |= CONTROL_WRITE_RTS;
723 }
724 if (clear & TIOCM_DTR) {
725 control &= ~CONTROL_DTR;
726 control |= CONTROL_WRITE_DTR;
727 }
728
441b62c1 729 dbg("%s - control = 0x%.4x", __func__, control);
39a66b8d 730
4cc27bd6 731 return cp210x_set_config(port, CP210X_SET_MHS, &control, 2);
39a66b8d
CS
732}
733
d94c7bd4
AC
734static void cp210x_dtr_rts(struct usb_serial_port *p, int on)
735{
736 if (on)
737 cp210x_tiocmset_port(p, NULL, TIOCM_DTR|TIOCM_RTS, 0);
738 else
739 cp210x_tiocmset_port(p, NULL, 0, TIOCM_DTR|TIOCM_RTS);
740}
741
4cc27bd6 742static int cp210x_tiocmget (struct tty_struct *tty, struct file *file)
39a66b8d 743{
95da310e 744 struct usb_serial_port *port = tty->driver_data;
b2bdd1f5
HH
745 unsigned int control;
746 int result;
39a66b8d 747
441b62c1 748 dbg("%s - port %d", __func__, port->number);
39a66b8d 749
4cc27bd6 750 cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1);
39a66b8d
CS
751
752 result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0)
753 |((control & CONTROL_RTS) ? TIOCM_RTS : 0)
754 |((control & CONTROL_CTS) ? TIOCM_CTS : 0)
755 |((control & CONTROL_DSR) ? TIOCM_DSR : 0)
756 |((control & CONTROL_RING)? TIOCM_RI : 0)
757 |((control & CONTROL_DCD) ? TIOCM_CD : 0);
758
441b62c1 759 dbg("%s - control = 0x%.2x", __func__, control);
39a66b8d
CS
760
761 return result;
1da177e4
LT
762}
763
d94c7bd4
AC
764static int cp210x_carrier_raised(struct usb_serial_port *p)
765{
766 unsigned int control;
767 cp210x_get_config(p, CP210X_GET_MDMSTS, &control, 1);
768 if (control & CONTROL_DCD)
769 return 1;
770 return 0;
771}
772
4cc27bd6 773static void cp210x_break_ctl (struct tty_struct *tty, int break_state)
1da177e4 774{
95da310e 775 struct usb_serial_port *port = tty->driver_data;
b2bdd1f5 776 unsigned int state;
1da177e4 777
441b62c1 778 dbg("%s - port %d", __func__, port->number);
1da177e4
LT
779 if (break_state == 0)
780 state = BREAK_OFF;
781 else
782 state = BREAK_ON;
441b62c1 783 dbg("%s - turning break %s", __func__,
ff7eb602 784 state == BREAK_OFF ? "off" : "on");
4cc27bd6 785 cp210x_set_config(port, CP210X_SET_BREAK, &state, 2);
1da177e4
LT
786}
787
4cc27bd6 788static int cp210x_startup(struct usb_serial *serial)
1da177e4 789{
4cc27bd6 790 /* cp210x buffers behave strangely unless device is reset */
1da177e4
LT
791 usb_reset_device(serial->dev);
792 return 0;
793}
794
4cc27bd6 795static int __init cp210x_init(void)
1da177e4
LT
796{
797 int retval;
798
4cc27bd6 799 retval = usb_serial_register(&cp210x_device);
1da177e4 800 if (retval)
39a66b8d 801 return retval; /* Failed to register */
1da177e4 802
4cc27bd6 803 retval = usb_register(&cp210x_driver);
1da177e4 804 if (retval) {
39a66b8d 805 /* Failed to register */
4cc27bd6 806 usb_serial_deregister(&cp210x_device);
1da177e4
LT
807 return retval;
808 }
809
39a66b8d 810 /* Success */
c197a8db
GKH
811 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
812 DRIVER_DESC "\n");
1da177e4
LT
813 return 0;
814}
815
4cc27bd6 816static void __exit cp210x_exit(void)
1da177e4 817{
4cc27bd6
CS
818 usb_deregister(&cp210x_driver);
819 usb_serial_deregister(&cp210x_device);
1da177e4
LT
820}
821
4cc27bd6
CS
822module_init(cp210x_init);
823module_exit(cp210x_exit);
1da177e4
LT
824
825MODULE_DESCRIPTION(DRIVER_DESC);
826MODULE_VERSION(DRIVER_VERSION);
827MODULE_LICENSE("GPL");
828
829module_param(debug, bool, S_IRUGO | S_IWUSR);
830MODULE_PARM_DESC(debug, "Enable verbose debugging messages");
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