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Commit | Line | Data |
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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 | */ | |
4cc27bd6 | 36 | static int cp210x_open(struct tty_struct *, struct usb_serial_port *, |
95da310e | 37 | struct file *); |
4cc27bd6 CS |
38 | static void cp210x_cleanup(struct usb_serial_port *); |
39 | static void cp210x_close(struct usb_serial_port *); | |
40 | static void cp210x_get_termios(struct tty_struct *, | |
d2ad67b3 | 41 | struct usb_serial_port *port); |
4cc27bd6 | 42 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 43 | unsigned int *cflagp, unsigned int *baudp); |
4cc27bd6 | 44 | static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *, |
95da310e | 45 | struct ktermios*); |
4cc27bd6 CS |
46 | static int cp210x_tiocmget(struct tty_struct *, struct file *); |
47 | static int cp210x_tiocmset(struct tty_struct *, struct file *, | |
39a66b8d | 48 | unsigned int, unsigned int); |
4cc27bd6 | 49 | static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *, |
d2ad67b3 | 50 | unsigned int, unsigned int); |
4cc27bd6 CS |
51 | static void cp210x_break_ctl(struct tty_struct *, int); |
52 | static int cp210x_startup(struct usb_serial *); | |
f9c99bb8 | 53 | static void cp210x_disconnect(struct usb_serial *); |
1da177e4 | 54 | |
1da177e4 LT |
55 | static int debug; |
56 | ||
57 | static struct usb_device_id id_table [] = { | |
5091b587 | 58 | { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ |
59fba744 | 59 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
b7c7cbc8 | 60 | { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ |
1f4f714f | 61 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
b7c7cbc8 | 62 | { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ |
198b9517 | 63 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 64 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 65 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
198b9517 | 66 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
67 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
68 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
b7c7cbc8 | 69 | { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */ |
0601e116 AK |
70 | { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */ |
71 | { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ | |
5de8b3ac | 72 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 73 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
92f5cae2 | 74 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 75 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 76 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
e988fc8a CS |
77 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
78 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 79 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 80 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 81 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 82 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
fc4bd64c JH |
83 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
84 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
e988fc8a | 85 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
c6535668 | 86 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 87 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
59fba744 | 88 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
78001e3d BS |
89 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
90 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 91 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
b7c7cbc8 | 92 | { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ |
78001e3d | 93 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 94 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
95bec45d | 95 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */ |
e8898681 | 96 | { USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */ |
b7c7cbc8 | 97 | { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ |
ba0f332c | 98 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
881e3c98 | 99 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
d23bac9f | 100 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
e988fc8a | 101 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 102 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
5de8b3ac CS |
103 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
104 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
105 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
106 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 107 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 108 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 109 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 110 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
5de8b3ac | 111 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 112 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
ba0f332c | 113 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ |
39a66b8d | 114 | { } /* Terminating Entry */ |
1da177e4 LT |
115 | }; |
116 | ||
ff7eb602 | 117 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 118 | |
4cc27bd6 CS |
119 | static struct usb_driver cp210x_driver = { |
120 | .name = "cp210x", | |
1da177e4 LT |
121 | .probe = usb_serial_probe, |
122 | .disconnect = usb_serial_disconnect, | |
123 | .id_table = id_table, | |
ba9dc657 | 124 | .no_dynamic_id = 1, |
1da177e4 LT |
125 | }; |
126 | ||
4cc27bd6 | 127 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
128 | .driver = { |
129 | .owner = THIS_MODULE, | |
4cc27bd6 | 130 | .name = "cp210x", |
18fcac35 | 131 | }, |
4cc27bd6 | 132 | .usb_driver = &cp210x_driver, |
1da177e4 | 133 | .id_table = id_table, |
1da177e4 | 134 | .num_ports = 1, |
4cc27bd6 CS |
135 | .open = cp210x_open, |
136 | .close = cp210x_close, | |
137 | .break_ctl = cp210x_break_ctl, | |
138 | .set_termios = cp210x_set_termios, | |
139 | .tiocmget = cp210x_tiocmget, | |
140 | .tiocmset = cp210x_tiocmset, | |
141 | .attach = cp210x_startup, | |
f9c99bb8 | 142 | .disconnect = cp210x_disconnect, |
1da177e4 LT |
143 | }; |
144 | ||
39a66b8d | 145 | /* Config request types */ |
1da177e4 LT |
146 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
147 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
148 | ||
93ef1f1f CS |
149 | /* Config request codes */ |
150 | #define CP210X_IFC_ENABLE 0x00 | |
151 | #define CP210X_SET_BAUDDIV 0x01 | |
152 | #define CP210X_GET_BAUDDIV 0x02 | |
153 | #define CP210X_SET_LINE_CTL 0x03 | |
154 | #define CP210X_GET_LINE_CTL 0x04 | |
155 | #define CP210X_SET_BREAK 0x05 | |
156 | #define CP210X_IMM_CHAR 0x06 | |
157 | #define CP210X_SET_MHS 0x07 | |
158 | #define CP210X_GET_MDMSTS 0x08 | |
159 | #define CP210X_SET_XON 0x09 | |
160 | #define CP210X_SET_XOFF 0x0A | |
161 | #define CP210X_SET_EVENTMASK 0x0B | |
162 | #define CP210X_GET_EVENTMASK 0x0C | |
163 | #define CP210X_SET_CHAR 0x0D | |
164 | #define CP210X_GET_CHARS 0x0E | |
165 | #define CP210X_GET_PROPS 0x0F | |
166 | #define CP210X_GET_COMM_STATUS 0x10 | |
167 | #define CP210X_RESET 0x11 | |
168 | #define CP210X_PURGE 0x12 | |
169 | #define CP210X_SET_FLOW 0x13 | |
170 | #define CP210X_GET_FLOW 0x14 | |
171 | #define CP210X_EMBED_EVENTS 0x15 | |
172 | #define CP210X_GET_EVENTSTATE 0x16 | |
173 | #define CP210X_SET_CHARS 0x19 | |
174 | ||
175 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
176 | #define UART_ENABLE 0x0001 |
177 | #define UART_DISABLE 0x0000 | |
178 | ||
93ef1f1f | 179 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
180 | #define BAUD_RATE_GEN_FREQ 0x384000 |
181 | ||
93ef1f1f | 182 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 183 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 184 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
185 | #define BITS_DATA_6 0X0600 |
186 | #define BITS_DATA_7 0X0700 | |
187 | #define BITS_DATA_8 0X0800 | |
188 | #define BITS_DATA_9 0X0900 | |
189 | ||
190 | #define BITS_PARITY_MASK 0x00f0 | |
191 | #define BITS_PARITY_NONE 0x0000 | |
192 | #define BITS_PARITY_ODD 0x0010 | |
193 | #define BITS_PARITY_EVEN 0x0020 | |
194 | #define BITS_PARITY_MARK 0x0030 | |
195 | #define BITS_PARITY_SPACE 0x0040 | |
196 | ||
197 | #define BITS_STOP_MASK 0x000f | |
198 | #define BITS_STOP_1 0x0000 | |
199 | #define BITS_STOP_1_5 0x0001 | |
200 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 201 | |
93ef1f1f | 202 | /* CP210X_SET_BREAK */ |
1da177e4 LT |
203 | #define BREAK_ON 0x0000 |
204 | #define BREAK_OFF 0x0001 | |
205 | ||
93ef1f1f | 206 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
207 | #define CONTROL_DTR 0x0001 |
208 | #define CONTROL_RTS 0x0002 | |
209 | #define CONTROL_CTS 0x0010 | |
210 | #define CONTROL_DSR 0x0020 | |
211 | #define CONTROL_RING 0x0040 | |
212 | #define CONTROL_DCD 0x0080 | |
213 | #define CONTROL_WRITE_DTR 0x0100 | |
214 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 215 | |
39a66b8d | 216 | /* |
4cc27bd6 CS |
217 | * cp210x_get_config |
218 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
219 | * 'size' is specified in bytes. |
220 | * 'data' is a pointer to a pre-allocated array of integers large | |
221 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
222 | */ | |
4cc27bd6 | 223 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 224 | unsigned int *data, int size) |
1da177e4 LT |
225 | { |
226 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 227 | __le32 *buf; |
39a66b8d CS |
228 | int result, i, length; |
229 | ||
230 | /* Number of integers required to contain the array */ | |
231 | length = (((size - 1) | 3) + 1)/4; | |
232 | ||
53ebb3b8 | 233 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 234 | if (!buf) { |
441b62c1 | 235 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
236 | return -ENOMEM; |
237 | } | |
1da177e4 | 238 | |
39a66b8d | 239 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 240 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 241 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 242 | 0, buf, size, 300); |
1da177e4 | 243 | |
39a66b8d | 244 | /* Convert data into an array of integers */ |
ff7eb602 | 245 | for (i = 0; i < length; i++) |
39a66b8d | 246 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 247 | |
39a66b8d | 248 | kfree(buf); |
1da177e4 | 249 | |
39a66b8d | 250 | if (result != size) { |
97324955 | 251 | dbg("%s - Unable to send config request, " |
39a66b8d | 252 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 253 | __func__, request, size, result); |
39a66b8d CS |
254 | return -EPROTO; |
255 | } | |
1da177e4 | 256 | |
39a66b8d | 257 | return 0; |
1da177e4 LT |
258 | } |
259 | ||
39a66b8d | 260 | /* |
4cc27bd6 CS |
261 | * cp210x_set_config |
262 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
263 | * Values less than 16 bits wide are sent directly |
264 | * 'size' is specified in bytes. | |
265 | */ | |
4cc27bd6 | 266 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 267 | unsigned int *data, int size) |
1da177e4 LT |
268 | { |
269 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 270 | __le32 *buf; |
39a66b8d | 271 | int result, i, length; |
1da177e4 | 272 | |
39a66b8d CS |
273 | /* Number of integers required to contain the array */ |
274 | length = (((size - 1) | 3) + 1)/4; | |
275 | ||
53ebb3b8 | 276 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
277 | if (!buf) { |
278 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 279 | __func__); |
39a66b8d CS |
280 | return -ENOMEM; |
281 | } | |
282 | ||
283 | /* Array of integers into bytes */ | |
284 | for (i = 0; i < length; i++) | |
285 | buf[i] = cpu_to_le32(data[i]); | |
286 | ||
287 | if (size > 2) { | |
ff7eb602 | 288 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
289 | usb_sndctrlpipe(serial->dev, 0), |
290 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
291 | 0, buf, size, 300); | |
292 | } else { | |
ff7eb602 | 293 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
294 | usb_sndctrlpipe(serial->dev, 0), |
295 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
296 | 0, NULL, 0, 300); | |
1da177e4 LT |
297 | } |
298 | ||
39a66b8d CS |
299 | kfree(buf); |
300 | ||
301 | if ((size > 2 && result != size) || result < 0) { | |
97324955 | 302 | dbg("%s - Unable to send request, " |
39a66b8d | 303 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 304 | __func__, request, size, result); |
39a66b8d CS |
305 | return -EPROTO; |
306 | } | |
1da177e4 | 307 | |
39a66b8d | 308 | /* Single data value */ |
ff7eb602 | 309 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
310 | usb_sndctrlpipe(serial->dev, 0), |
311 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
312 | 0, NULL, 0, 300); | |
1da177e4 LT |
313 | return 0; |
314 | } | |
315 | ||
39a66b8d | 316 | /* |
4cc27bd6 CS |
317 | * cp210x_set_config_single |
318 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
319 | * without requiring an integer pointer |
320 | */ | |
4cc27bd6 | 321 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
322 | u8 request, unsigned int data) |
323 | { | |
4cc27bd6 | 324 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
325 | } |
326 | ||
ef8b6bcb | 327 | /* |
4cc27bd6 | 328 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
329 | * Quantises the baud rate as per AN205 Table 1 |
330 | */ | |
4cc27bd6 | 331 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) { |
ef8b6bcb CS |
332 | if (baud <= 56) baud = 0; |
333 | else if (baud <= 300) baud = 300; | |
334 | else if (baud <= 600) baud = 600; | |
335 | else if (baud <= 1200) baud = 1200; | |
336 | else if (baud <= 1800) baud = 1800; | |
337 | else if (baud <= 2400) baud = 2400; | |
338 | else if (baud <= 4000) baud = 4000; | |
339 | else if (baud <= 4803) baud = 4800; | |
340 | else if (baud <= 7207) baud = 7200; | |
341 | else if (baud <= 9612) baud = 9600; | |
342 | else if (baud <= 14428) baud = 14400; | |
343 | else if (baud <= 16062) baud = 16000; | |
344 | else if (baud <= 19250) baud = 19200; | |
345 | else if (baud <= 28912) baud = 28800; | |
346 | else if (baud <= 38601) baud = 38400; | |
347 | else if (baud <= 51558) baud = 51200; | |
348 | else if (baud <= 56280) baud = 56000; | |
349 | else if (baud <= 58053) baud = 57600; | |
350 | else if (baud <= 64111) baud = 64000; | |
351 | else if (baud <= 77608) baud = 76800; | |
352 | else if (baud <= 117028) baud = 115200; | |
353 | else if (baud <= 129347) baud = 128000; | |
354 | else if (baud <= 156868) baud = 153600; | |
355 | else if (baud <= 237832) baud = 230400; | |
356 | else if (baud <= 254234) baud = 250000; | |
357 | else if (baud <= 273066) baud = 256000; | |
358 | else if (baud <= 491520) baud = 460800; | |
359 | else if (baud <= 567138) baud = 500000; | |
360 | else if (baud <= 670254) baud = 576000; | |
361 | else if (baud <= 1053257) baud = 921600; | |
362 | else if (baud <= 1474560) baud = 1228800; | |
363 | else if (baud <= 2457600) baud = 1843200; | |
364 | else baud = 3686400; | |
365 | return baud; | |
366 | } | |
367 | ||
4cc27bd6 | 368 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port, |
95da310e | 369 | struct file *filp) |
1da177e4 LT |
370 | { |
371 | struct usb_serial *serial = port->serial; | |
372 | int result; | |
373 | ||
441b62c1 | 374 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 375 | |
4cc27bd6 | 376 | if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) { |
1da177e4 | 377 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
441b62c1 | 378 | __func__); |
1da177e4 LT |
379 | return -EPROTO; |
380 | } | |
381 | ||
382 | /* Start reading from the device */ | |
ff7eb602 | 383 | usb_fill_bulk_urb(port->read_urb, serial->dev, |
1da177e4 LT |
384 | usb_rcvbulkpipe(serial->dev, |
385 | port->bulk_in_endpointAddress), | |
386 | port->read_urb->transfer_buffer, | |
387 | port->read_urb->transfer_buffer_length, | |
388 | serial->type->read_bulk_callback, | |
389 | port); | |
390 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
391 | if (result) { | |
392 | dev_err(&port->dev, "%s - failed resubmitting read urb, " | |
441b62c1 | 393 | "error %d\n", __func__, result); |
1da177e4 LT |
394 | return result; |
395 | } | |
396 | ||
39a66b8d | 397 | /* Configure the termios structure */ |
4cc27bd6 | 398 | cp210x_get_termios(tty, port); |
1da177e4 | 399 | |
39a66b8d | 400 | /* Set the DTR and RTS pins low */ |
4cc27bd6 | 401 | cp210x_tiocmset_port(tty ? (struct usb_serial_port *) tty->driver_data |
d2ad67b3 V |
402 | : port, |
403 | NULL, TIOCM_DTR | TIOCM_RTS, 0); | |
39a66b8d | 404 | |
1da177e4 LT |
405 | return 0; |
406 | } | |
407 | ||
4cc27bd6 | 408 | static void cp210x_cleanup(struct usb_serial_port *port) |
1da177e4 LT |
409 | { |
410 | struct usb_serial *serial = port->serial; | |
411 | ||
441b62c1 | 412 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
413 | |
414 | if (serial->dev) { | |
415 | /* shutdown any bulk reads that might be going on */ | |
416 | if (serial->num_bulk_out) | |
417 | usb_kill_urb(port->write_urb); | |
418 | if (serial->num_bulk_in) | |
419 | usb_kill_urb(port->read_urb); | |
420 | } | |
421 | } | |
422 | ||
4cc27bd6 | 423 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 424 | { |
441b62c1 | 425 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
426 | |
427 | /* shutdown our urbs */ | |
441b62c1 | 428 | dbg("%s - shutting down urbs", __func__); |
1da177e4 LT |
429 | usb_kill_urb(port->write_urb); |
430 | usb_kill_urb(port->read_urb); | |
431 | ||
95bef012 ON |
432 | mutex_lock(&port->serial->disc_mutex); |
433 | if (!port->serial->disconnected) | |
4cc27bd6 | 434 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
95bef012 | 435 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
436 | } |
437 | ||
39a66b8d | 438 | /* |
4cc27bd6 | 439 | * cp210x_get_termios |
39a66b8d CS |
440 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
441 | * from the device, corrects any unsupported values, and configures the | |
442 | * termios structure to reflect the state of the device | |
443 | */ | |
4cc27bd6 | 444 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
445 | struct usb_serial_port *port) |
446 | { | |
447 | unsigned int baud; | |
448 | ||
449 | if (tty) { | |
4cc27bd6 | 450 | cp210x_get_termios_port(tty->driver_data, |
d2ad67b3 V |
451 | &tty->termios->c_cflag, &baud); |
452 | tty_encode_baud_rate(tty, baud, baud); | |
453 | } | |
454 | ||
455 | else { | |
456 | unsigned int cflag; | |
457 | cflag = 0; | |
4cc27bd6 | 458 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
459 | } |
460 | } | |
461 | ||
462 | /* | |
4cc27bd6 CS |
463 | * cp210x_get_termios_port |
464 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 465 | */ |
4cc27bd6 | 466 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 467 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 468 | { |
39a66b8d | 469 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
470 | unsigned int baud; |
471 | unsigned int bits; | |
1da177e4 | 472 | |
441b62c1 | 473 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 474 | |
4cc27bd6 | 475 | cp210x_get_config(port, CP210X_GET_BAUDDIV, &baud, 2); |
39a66b8d | 476 | /* Convert to baudrate */ |
1da177e4 | 477 | if (baud) |
4cc27bd6 | 478 | baud = cp210x_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud); |
1da177e4 | 479 | |
441b62c1 | 480 | dbg("%s - baud rate = %d", __func__, baud); |
d2ad67b3 | 481 | *baudp = baud; |
9ab0f202 | 482 | |
d2ad67b3 | 483 | cflag = *cflagp; |
1da177e4 | 484 | |
4cc27bd6 | 485 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 | 486 | cflag &= ~CSIZE; |
ff7eb602 AC |
487 | switch (bits & BITS_DATA_MASK) { |
488 | case BITS_DATA_5: | |
489 | dbg("%s - data bits = 5", __func__); | |
490 | cflag |= CS5; | |
491 | break; | |
492 | case BITS_DATA_6: | |
493 | dbg("%s - data bits = 6", __func__); | |
494 | cflag |= CS6; | |
495 | break; | |
496 | case BITS_DATA_7: | |
497 | dbg("%s - data bits = 7", __func__); | |
498 | cflag |= CS7; | |
499 | break; | |
500 | case BITS_DATA_8: | |
501 | dbg("%s - data bits = 8", __func__); | |
502 | cflag |= CS8; | |
503 | break; | |
504 | case BITS_DATA_9: | |
505 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
506 | __func__); | |
507 | cflag |= CS8; | |
508 | bits &= ~BITS_DATA_MASK; | |
509 | bits |= BITS_DATA_8; | |
4cc27bd6 | 510 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
511 | break; |
512 | default: | |
513 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
514 | cflag |= CS8; | |
515 | bits &= ~BITS_DATA_MASK; | |
516 | bits |= BITS_DATA_8; | |
4cc27bd6 | 517 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 518 | break; |
1da177e4 LT |
519 | } |
520 | ||
ff7eb602 AC |
521 | switch (bits & BITS_PARITY_MASK) { |
522 | case BITS_PARITY_NONE: | |
523 | dbg("%s - parity = NONE", __func__); | |
524 | cflag &= ~PARENB; | |
525 | break; | |
526 | case BITS_PARITY_ODD: | |
527 | dbg("%s - parity = ODD", __func__); | |
528 | cflag |= (PARENB|PARODD); | |
529 | break; | |
530 | case BITS_PARITY_EVEN: | |
531 | dbg("%s - parity = EVEN", __func__); | |
532 | cflag &= ~PARODD; | |
533 | cflag |= PARENB; | |
534 | break; | |
535 | case BITS_PARITY_MARK: | |
536 | dbg("%s - parity = MARK (not supported, disabling parity)", | |
537 | __func__); | |
538 | cflag &= ~PARENB; | |
539 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 540 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
541 | break; |
542 | case BITS_PARITY_SPACE: | |
543 | dbg("%s - parity = SPACE (not supported, disabling parity)", | |
544 | __func__); | |
545 | cflag &= ~PARENB; | |
546 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 547 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
548 | break; |
549 | default: | |
550 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
551 | cflag &= ~PARENB; | |
552 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 553 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 554 | break; |
1da177e4 LT |
555 | } |
556 | ||
557 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
558 | switch (bits & BITS_STOP_MASK) { |
559 | case BITS_STOP_1: | |
560 | dbg("%s - stop bits = 1", __func__); | |
561 | break; | |
562 | case BITS_STOP_1_5: | |
563 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
564 | __func__); | |
565 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 566 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
567 | break; |
568 | case BITS_STOP_2: | |
569 | dbg("%s - stop bits = 2", __func__); | |
570 | cflag |= CSTOPB; | |
571 | break; | |
572 | default: | |
573 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
574 | __func__); | |
575 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 576 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 577 | break; |
1da177e4 LT |
578 | } |
579 | ||
4cc27bd6 | 580 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 581 | if (modem_ctl[0] & 0x0008) { |
441b62c1 | 582 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
583 | cflag |= CRTSCTS; |
584 | } else { | |
441b62c1 | 585 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
586 | cflag &= ~CRTSCTS; |
587 | } | |
588 | ||
d2ad67b3 | 589 | *cflagp = cflag; |
1da177e4 LT |
590 | } |
591 | ||
4cc27bd6 | 592 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 593 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 594 | { |
9ab0f202 | 595 | unsigned int cflag, old_cflag; |
b2bdd1f5 | 596 | unsigned int baud = 0, bits; |
39a66b8d | 597 | unsigned int modem_ctl[4]; |
1da177e4 | 598 | |
441b62c1 | 599 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 600 | |
95da310e | 601 | if (!tty) |
1da177e4 | 602 | return; |
9ab0f202 | 603 | |
95da310e AC |
604 | tty->termios->c_cflag &= ~CMSPAR; |
605 | cflag = tty->termios->c_cflag; | |
01e96d28 | 606 | old_cflag = old_termios->c_cflag; |
4cc27bd6 | 607 | baud = cp210x_quantise_baudrate(tty_get_baud_rate(tty)); |
1da177e4 LT |
608 | |
609 | /* If the baud rate is to be updated*/ | |
ef8b6bcb CS |
610 | if (baud != tty_termios_baud_rate(old_termios) && baud != 0) { |
611 | dbg("%s - Setting baud rate to %d baud", __func__, | |
612 | baud); | |
4cc27bd6 | 613 | if (cp210x_set_config_single(port, CP210X_SET_BAUDDIV, |
ef8b6bcb | 614 | ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) { |
97324955 | 615 | dbg("Baud rate requested not supported by device\n"); |
ef8b6bcb | 616 | baud = tty_termios_baud_rate(old_termios); |
1da177e4 LT |
617 | } |
618 | } | |
9ab0f202 | 619 | /* Report back the resulting baud rate */ |
95da310e | 620 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 | 621 | |
39a66b8d | 622 | /* If the number of data bits is to be updated */ |
1da177e4 | 623 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 624 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
625 | bits &= ~BITS_DATA_MASK; |
626 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
627 | case CS5: |
628 | bits |= BITS_DATA_5; | |
629 | dbg("%s - data bits = 5", __func__); | |
630 | break; | |
631 | case CS6: | |
632 | bits |= BITS_DATA_6; | |
633 | dbg("%s - data bits = 6", __func__); | |
634 | break; | |
635 | case CS7: | |
636 | bits |= BITS_DATA_7; | |
637 | dbg("%s - data bits = 7", __func__); | |
638 | break; | |
639 | case CS8: | |
640 | bits |= BITS_DATA_8; | |
641 | dbg("%s - data bits = 8", __func__); | |
642 | break; | |
643 | /*case CS9: | |
644 | bits |= BITS_DATA_9; | |
645 | dbg("%s - data bits = 9", __func__); | |
646 | break;*/ | |
647 | default: | |
4cc27bd6 | 648 | dbg("cp210x driver does not " |
1da177e4 LT |
649 | "support the number of bits requested," |
650 | " using 8 bit mode\n"); | |
651 | bits |= BITS_DATA_8; | |
652 | break; | |
653 | } | |
4cc27bd6 | 654 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 655 | dbg("Number of data bits requested " |
1da177e4 LT |
656 | "not supported by device\n"); |
657 | } | |
658 | ||
659 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
4cc27bd6 | 660 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
661 | bits &= ~BITS_PARITY_MASK; |
662 | if (cflag & PARENB) { | |
663 | if (cflag & PARODD) { | |
664 | bits |= BITS_PARITY_ODD; | |
441b62c1 | 665 | dbg("%s - parity = ODD", __func__); |
1da177e4 LT |
666 | } else { |
667 | bits |= BITS_PARITY_EVEN; | |
441b62c1 | 668 | dbg("%s - parity = EVEN", __func__); |
1da177e4 LT |
669 | } |
670 | } | |
4cc27bd6 | 671 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 672 | dbg("Parity mode not supported " |
1da177e4 LT |
673 | "by device\n"); |
674 | } | |
675 | ||
676 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 677 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
678 | bits &= ~BITS_STOP_MASK; |
679 | if (cflag & CSTOPB) { | |
680 | bits |= BITS_STOP_2; | |
441b62c1 | 681 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
682 | } else { |
683 | bits |= BITS_STOP_1; | |
441b62c1 | 684 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 685 | } |
4cc27bd6 | 686 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 687 | dbg("Number of stop bits requested " |
1da177e4 LT |
688 | "not supported by device\n"); |
689 | } | |
39a66b8d CS |
690 | |
691 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 692 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 693 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", |
441b62c1 | 694 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
695 | modem_ctl[2], modem_ctl[3]); |
696 | ||
697 | if (cflag & CRTSCTS) { | |
698 | modem_ctl[0] &= ~0x7B; | |
699 | modem_ctl[0] |= 0x09; | |
700 | modem_ctl[1] = 0x80; | |
441b62c1 | 701 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
702 | } else { |
703 | modem_ctl[0] &= ~0x7B; | |
704 | modem_ctl[0] |= 0x01; | |
705 | modem_ctl[1] |= 0x40; | |
441b62c1 | 706 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
707 | } |
708 | ||
709 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 710 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d | 711 | modem_ctl[2], modem_ctl[3]); |
4cc27bd6 | 712 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
713 | } |
714 | ||
715 | } | |
716 | ||
4cc27bd6 | 717 | static int cp210x_tiocmset (struct tty_struct *tty, struct file *file, |
39a66b8d CS |
718 | unsigned int set, unsigned int clear) |
719 | { | |
95da310e | 720 | struct usb_serial_port *port = tty->driver_data; |
4cc27bd6 | 721 | return cp210x_tiocmset_port(port, file, set, clear); |
d2ad67b3 V |
722 | } |
723 | ||
4cc27bd6 | 724 | static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file, |
d2ad67b3 V |
725 | unsigned int set, unsigned int clear) |
726 | { | |
b2bdd1f5 | 727 | unsigned int control = 0; |
39a66b8d | 728 | |
441b62c1 | 729 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
730 | |
731 | if (set & TIOCM_RTS) { | |
732 | control |= CONTROL_RTS; | |
733 | control |= CONTROL_WRITE_RTS; | |
734 | } | |
735 | if (set & TIOCM_DTR) { | |
736 | control |= CONTROL_DTR; | |
737 | control |= CONTROL_WRITE_DTR; | |
738 | } | |
739 | if (clear & TIOCM_RTS) { | |
740 | control &= ~CONTROL_RTS; | |
741 | control |= CONTROL_WRITE_RTS; | |
742 | } | |
743 | if (clear & TIOCM_DTR) { | |
744 | control &= ~CONTROL_DTR; | |
745 | control |= CONTROL_WRITE_DTR; | |
746 | } | |
747 | ||
441b62c1 | 748 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d | 749 | |
4cc27bd6 | 750 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
751 | } |
752 | ||
4cc27bd6 | 753 | static int cp210x_tiocmget (struct tty_struct *tty, struct file *file) |
39a66b8d | 754 | { |
95da310e | 755 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
756 | unsigned int control; |
757 | int result; | |
39a66b8d | 758 | |
441b62c1 | 759 | dbg("%s - port %d", __func__, port->number); |
39a66b8d | 760 | |
4cc27bd6 | 761 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
762 | |
763 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
764 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
765 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
766 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
767 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
768 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
769 | ||
441b62c1 | 770 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
771 | |
772 | return result; | |
1da177e4 LT |
773 | } |
774 | ||
4cc27bd6 | 775 | static void cp210x_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 776 | { |
95da310e | 777 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 778 | unsigned int state; |
1da177e4 | 779 | |
441b62c1 | 780 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
781 | if (break_state == 0) |
782 | state = BREAK_OFF; | |
783 | else | |
784 | state = BREAK_ON; | |
441b62c1 | 785 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 786 | state == BREAK_OFF ? "off" : "on"); |
4cc27bd6 | 787 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
788 | } |
789 | ||
4cc27bd6 | 790 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 791 | { |
4cc27bd6 | 792 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 LT |
793 | usb_reset_device(serial->dev); |
794 | return 0; | |
795 | } | |
796 | ||
f9c99bb8 | 797 | static void cp210x_disconnect(struct usb_serial *serial) |
1da177e4 LT |
798 | { |
799 | int i; | |
800 | ||
441b62c1 | 801 | dbg("%s", __func__); |
1da177e4 | 802 | |
39a66b8d | 803 | /* Stop reads and writes on all ports */ |
ff7eb602 | 804 | for (i = 0; i < serial->num_ports; ++i) |
4cc27bd6 | 805 | cp210x_cleanup(serial->port[i]); |
1da177e4 LT |
806 | } |
807 | ||
4cc27bd6 | 808 | static int __init cp210x_init(void) |
1da177e4 LT |
809 | { |
810 | int retval; | |
811 | ||
4cc27bd6 | 812 | retval = usb_serial_register(&cp210x_device); |
1da177e4 | 813 | if (retval) |
39a66b8d | 814 | return retval; /* Failed to register */ |
1da177e4 | 815 | |
4cc27bd6 | 816 | retval = usb_register(&cp210x_driver); |
1da177e4 | 817 | if (retval) { |
39a66b8d | 818 | /* Failed to register */ |
4cc27bd6 | 819 | usb_serial_deregister(&cp210x_device); |
1da177e4 LT |
820 | return retval; |
821 | } | |
822 | ||
39a66b8d | 823 | /* Success */ |
c197a8db GKH |
824 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
825 | DRIVER_DESC "\n"); | |
1da177e4 LT |
826 | return 0; |
827 | } | |
828 | ||
4cc27bd6 | 829 | static void __exit cp210x_exit(void) |
1da177e4 | 830 | { |
4cc27bd6 CS |
831 | usb_deregister(&cp210x_driver); |
832 | usb_serial_deregister(&cp210x_device); | |
1da177e4 LT |
833 | } |
834 | ||
4cc27bd6 CS |
835 | module_init(cp210x_init); |
836 | module_exit(cp210x_exit); | |
1da177e4 LT |
837 | |
838 | MODULE_DESCRIPTION(DRIVER_DESC); | |
839 | MODULE_VERSION(DRIVER_VERSION); | |
840 | MODULE_LICENSE("GPL"); | |
841 | ||
842 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
843 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |