Commit | Line | Data |
---|---|---|
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 | 36 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *); |
4cc27bd6 CS |
37 | static void cp210x_cleanup(struct usb_serial_port *); |
38 | static void cp210x_close(struct usb_serial_port *); | |
39 | static void cp210x_get_termios(struct tty_struct *, | |
d2ad67b3 | 40 | struct usb_serial_port *port); |
4cc27bd6 | 41 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 42 | unsigned int *cflagp, unsigned int *baudp); |
4cc27bd6 | 43 | static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *, |
95da310e | 44 | struct ktermios*); |
4cc27bd6 CS |
45 | static int cp210x_tiocmget(struct tty_struct *, struct file *); |
46 | static int cp210x_tiocmset(struct tty_struct *, struct file *, | |
39a66b8d | 47 | unsigned int, unsigned int); |
4cc27bd6 | 48 | static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *, |
d2ad67b3 | 49 | unsigned int, unsigned int); |
4cc27bd6 CS |
50 | static void cp210x_break_ctl(struct tty_struct *, int); |
51 | static int cp210x_startup(struct usb_serial *); | |
f9c99bb8 | 52 | static void cp210x_disconnect(struct usb_serial *); |
d94c7bd4 AC |
53 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on); |
54 | static int cp210x_carrier_raised(struct usb_serial_port *p); | |
1da177e4 | 55 | |
1da177e4 LT |
56 | static int debug; |
57 | ||
7d40d7e8 | 58 | static const struct usb_device_id id_table[] = { |
5091b587 | 59 | { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ |
59fba744 | 60 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
b7c7cbc8 | 61 | { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ |
1f4f714f | 62 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
b7c7cbc8 | 63 | { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ |
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 */ |
92f5cae2 | 75 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 76 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 77 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
e988fc8a CS |
78 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
79 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 80 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 81 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 82 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 83 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
8bf16ba7 | 84 | { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */ |
fc4bd64c JH |
85 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
86 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
e988fc8a | 87 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
c6535668 | 88 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 89 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
59fba744 | 90 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
78001e3d BS |
91 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
92 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 93 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
bd07c551 | 94 | { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */ |
b7c7cbc8 | 95 | { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ |
78001e3d | 96 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 97 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
95bec45d | 98 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */ |
bd07c551 | 99 | { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesys ETRX2USB */ |
b7c7cbc8 | 100 | { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ |
ba0f332c | 101 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
8bf16ba7 | 102 | { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */ |
881e3c98 | 103 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
8bf16ba7 | 104 | { USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */ |
d23bac9f | 105 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
e988fc8a | 106 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 107 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
5de8b3ac CS |
108 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
109 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
110 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
111 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 112 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 113 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 114 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 115 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
5de8b3ac | 116 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 117 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
ba0f332c | 118 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ |
6f88139e | 119 | { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ |
39a66b8d | 120 | { } /* Terminating Entry */ |
1da177e4 LT |
121 | }; |
122 | ||
ff7eb602 | 123 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 124 | |
4cc27bd6 CS |
125 | static struct usb_driver cp210x_driver = { |
126 | .name = "cp210x", | |
1da177e4 LT |
127 | .probe = usb_serial_probe, |
128 | .disconnect = usb_serial_disconnect, | |
129 | .id_table = id_table, | |
ba9dc657 | 130 | .no_dynamic_id = 1, |
1da177e4 LT |
131 | }; |
132 | ||
4cc27bd6 | 133 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
134 | .driver = { |
135 | .owner = THIS_MODULE, | |
4cc27bd6 | 136 | .name = "cp210x", |
18fcac35 | 137 | }, |
4cc27bd6 | 138 | .usb_driver = &cp210x_driver, |
1da177e4 | 139 | .id_table = id_table, |
1da177e4 | 140 | .num_ports = 1, |
aea006b9 | 141 | .bulk_in_size = 256, |
d4e598f6 | 142 | .bulk_out_size = 256, |
4cc27bd6 CS |
143 | .open = cp210x_open, |
144 | .close = cp210x_close, | |
145 | .break_ctl = cp210x_break_ctl, | |
146 | .set_termios = cp210x_set_termios, | |
147 | .tiocmget = cp210x_tiocmget, | |
148 | .tiocmset = cp210x_tiocmset, | |
149 | .attach = cp210x_startup, | |
f9c99bb8 | 150 | .disconnect = cp210x_disconnect, |
d94c7bd4 AC |
151 | .dtr_rts = cp210x_dtr_rts, |
152 | .carrier_raised = cp210x_carrier_raised | |
1da177e4 LT |
153 | }; |
154 | ||
39a66b8d | 155 | /* Config request types */ |
1da177e4 LT |
156 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
157 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
158 | ||
93ef1f1f CS |
159 | /* Config request codes */ |
160 | #define CP210X_IFC_ENABLE 0x00 | |
161 | #define CP210X_SET_BAUDDIV 0x01 | |
162 | #define CP210X_GET_BAUDDIV 0x02 | |
163 | #define CP210X_SET_LINE_CTL 0x03 | |
164 | #define CP210X_GET_LINE_CTL 0x04 | |
165 | #define CP210X_SET_BREAK 0x05 | |
166 | #define CP210X_IMM_CHAR 0x06 | |
167 | #define CP210X_SET_MHS 0x07 | |
168 | #define CP210X_GET_MDMSTS 0x08 | |
169 | #define CP210X_SET_XON 0x09 | |
170 | #define CP210X_SET_XOFF 0x0A | |
171 | #define CP210X_SET_EVENTMASK 0x0B | |
172 | #define CP210X_GET_EVENTMASK 0x0C | |
173 | #define CP210X_SET_CHAR 0x0D | |
174 | #define CP210X_GET_CHARS 0x0E | |
175 | #define CP210X_GET_PROPS 0x0F | |
176 | #define CP210X_GET_COMM_STATUS 0x10 | |
177 | #define CP210X_RESET 0x11 | |
178 | #define CP210X_PURGE 0x12 | |
179 | #define CP210X_SET_FLOW 0x13 | |
180 | #define CP210X_GET_FLOW 0x14 | |
181 | #define CP210X_EMBED_EVENTS 0x15 | |
182 | #define CP210X_GET_EVENTSTATE 0x16 | |
183 | #define CP210X_SET_CHARS 0x19 | |
184 | ||
185 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
186 | #define UART_ENABLE 0x0001 |
187 | #define UART_DISABLE 0x0000 | |
188 | ||
93ef1f1f | 189 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
190 | #define BAUD_RATE_GEN_FREQ 0x384000 |
191 | ||
93ef1f1f | 192 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 193 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 194 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
195 | #define BITS_DATA_6 0X0600 |
196 | #define BITS_DATA_7 0X0700 | |
197 | #define BITS_DATA_8 0X0800 | |
198 | #define BITS_DATA_9 0X0900 | |
199 | ||
200 | #define BITS_PARITY_MASK 0x00f0 | |
201 | #define BITS_PARITY_NONE 0x0000 | |
202 | #define BITS_PARITY_ODD 0x0010 | |
203 | #define BITS_PARITY_EVEN 0x0020 | |
204 | #define BITS_PARITY_MARK 0x0030 | |
205 | #define BITS_PARITY_SPACE 0x0040 | |
206 | ||
207 | #define BITS_STOP_MASK 0x000f | |
208 | #define BITS_STOP_1 0x0000 | |
209 | #define BITS_STOP_1_5 0x0001 | |
210 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 211 | |
93ef1f1f | 212 | /* CP210X_SET_BREAK */ |
1da177e4 LT |
213 | #define BREAK_ON 0x0000 |
214 | #define BREAK_OFF 0x0001 | |
215 | ||
93ef1f1f | 216 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
217 | #define CONTROL_DTR 0x0001 |
218 | #define CONTROL_RTS 0x0002 | |
219 | #define CONTROL_CTS 0x0010 | |
220 | #define CONTROL_DSR 0x0020 | |
221 | #define CONTROL_RING 0x0040 | |
222 | #define CONTROL_DCD 0x0080 | |
223 | #define CONTROL_WRITE_DTR 0x0100 | |
224 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 225 | |
39a66b8d | 226 | /* |
4cc27bd6 CS |
227 | * cp210x_get_config |
228 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
229 | * 'size' is specified in bytes. |
230 | * 'data' is a pointer to a pre-allocated array of integers large | |
231 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
232 | */ | |
4cc27bd6 | 233 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 234 | unsigned int *data, int size) |
1da177e4 LT |
235 | { |
236 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 237 | __le32 *buf; |
39a66b8d CS |
238 | int result, i, length; |
239 | ||
240 | /* Number of integers required to contain the array */ | |
241 | length = (((size - 1) | 3) + 1)/4; | |
242 | ||
53ebb3b8 | 243 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 244 | if (!buf) { |
441b62c1 | 245 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
246 | return -ENOMEM; |
247 | } | |
1da177e4 | 248 | |
39a66b8d | 249 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 250 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 251 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 252 | 0, buf, size, 300); |
1da177e4 | 253 | |
39a66b8d | 254 | /* Convert data into an array of integers */ |
ff7eb602 | 255 | for (i = 0; i < length; i++) |
39a66b8d | 256 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 257 | |
39a66b8d | 258 | kfree(buf); |
1da177e4 | 259 | |
39a66b8d | 260 | if (result != size) { |
97324955 | 261 | dbg("%s - Unable to send config request, " |
39a66b8d | 262 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 263 | __func__, request, size, result); |
39a66b8d CS |
264 | return -EPROTO; |
265 | } | |
1da177e4 | 266 | |
39a66b8d | 267 | return 0; |
1da177e4 LT |
268 | } |
269 | ||
39a66b8d | 270 | /* |
4cc27bd6 CS |
271 | * cp210x_set_config |
272 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
273 | * Values less than 16 bits wide are sent directly |
274 | * 'size' is specified in bytes. | |
275 | */ | |
4cc27bd6 | 276 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 277 | unsigned int *data, int size) |
1da177e4 LT |
278 | { |
279 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 280 | __le32 *buf; |
39a66b8d | 281 | int result, i, length; |
1da177e4 | 282 | |
39a66b8d CS |
283 | /* Number of integers required to contain the array */ |
284 | length = (((size - 1) | 3) + 1)/4; | |
285 | ||
53ebb3b8 | 286 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
287 | if (!buf) { |
288 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 289 | __func__); |
39a66b8d CS |
290 | return -ENOMEM; |
291 | } | |
292 | ||
293 | /* Array of integers into bytes */ | |
294 | for (i = 0; i < length; i++) | |
295 | buf[i] = cpu_to_le32(data[i]); | |
296 | ||
297 | if (size > 2) { | |
ff7eb602 | 298 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
299 | usb_sndctrlpipe(serial->dev, 0), |
300 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
301 | 0, buf, size, 300); | |
302 | } else { | |
ff7eb602 | 303 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
304 | usb_sndctrlpipe(serial->dev, 0), |
305 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
306 | 0, NULL, 0, 300); | |
1da177e4 LT |
307 | } |
308 | ||
39a66b8d CS |
309 | kfree(buf); |
310 | ||
311 | if ((size > 2 && result != size) || result < 0) { | |
97324955 | 312 | dbg("%s - Unable to send request, " |
39a66b8d | 313 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 314 | __func__, request, size, result); |
39a66b8d CS |
315 | return -EPROTO; |
316 | } | |
1da177e4 LT |
317 | |
318 | return 0; | |
319 | } | |
320 | ||
39a66b8d | 321 | /* |
4cc27bd6 CS |
322 | * cp210x_set_config_single |
323 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
324 | * without requiring an integer pointer |
325 | */ | |
4cc27bd6 | 326 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
327 | u8 request, unsigned int data) |
328 | { | |
4cc27bd6 | 329 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
330 | } |
331 | ||
ef8b6bcb | 332 | /* |
4cc27bd6 | 333 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
334 | * Quantises the baud rate as per AN205 Table 1 |
335 | */ | |
4cc27bd6 | 336 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) { |
ef8b6bcb CS |
337 | if (baud <= 56) baud = 0; |
338 | else if (baud <= 300) baud = 300; | |
339 | else if (baud <= 600) baud = 600; | |
340 | else if (baud <= 1200) baud = 1200; | |
341 | else if (baud <= 1800) baud = 1800; | |
342 | else if (baud <= 2400) baud = 2400; | |
343 | else if (baud <= 4000) baud = 4000; | |
344 | else if (baud <= 4803) baud = 4800; | |
345 | else if (baud <= 7207) baud = 7200; | |
346 | else if (baud <= 9612) baud = 9600; | |
347 | else if (baud <= 14428) baud = 14400; | |
348 | else if (baud <= 16062) baud = 16000; | |
349 | else if (baud <= 19250) baud = 19200; | |
350 | else if (baud <= 28912) baud = 28800; | |
351 | else if (baud <= 38601) baud = 38400; | |
352 | else if (baud <= 51558) baud = 51200; | |
353 | else if (baud <= 56280) baud = 56000; | |
354 | else if (baud <= 58053) baud = 57600; | |
355 | else if (baud <= 64111) baud = 64000; | |
356 | else if (baud <= 77608) baud = 76800; | |
357 | else if (baud <= 117028) baud = 115200; | |
358 | else if (baud <= 129347) baud = 128000; | |
359 | else if (baud <= 156868) baud = 153600; | |
360 | else if (baud <= 237832) baud = 230400; | |
361 | else if (baud <= 254234) baud = 250000; | |
362 | else if (baud <= 273066) baud = 256000; | |
363 | else if (baud <= 491520) baud = 460800; | |
364 | else if (baud <= 567138) baud = 500000; | |
365 | else if (baud <= 670254) baud = 576000; | |
366 | else if (baud <= 1053257) baud = 921600; | |
367 | else if (baud <= 1474560) baud = 1228800; | |
368 | else if (baud <= 2457600) baud = 1843200; | |
369 | else baud = 3686400; | |
370 | return baud; | |
371 | } | |
372 | ||
a509a7e4 | 373 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
374 | { |
375 | struct usb_serial *serial = port->serial; | |
376 | int result; | |
377 | ||
441b62c1 | 378 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 379 | |
4cc27bd6 | 380 | if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) { |
1da177e4 | 381 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
441b62c1 | 382 | __func__); |
1da177e4 LT |
383 | return -EPROTO; |
384 | } | |
385 | ||
386 | /* Start reading from the device */ | |
ff7eb602 | 387 | usb_fill_bulk_urb(port->read_urb, serial->dev, |
1da177e4 LT |
388 | usb_rcvbulkpipe(serial->dev, |
389 | port->bulk_in_endpointAddress), | |
390 | port->read_urb->transfer_buffer, | |
391 | port->read_urb->transfer_buffer_length, | |
392 | serial->type->read_bulk_callback, | |
393 | port); | |
394 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
395 | if (result) { | |
396 | dev_err(&port->dev, "%s - failed resubmitting read urb, " | |
441b62c1 | 397 | "error %d\n", __func__, result); |
1da177e4 LT |
398 | return result; |
399 | } | |
400 | ||
39a66b8d | 401 | /* Configure the termios structure */ |
4cc27bd6 | 402 | cp210x_get_termios(tty, port); |
1da177e4 LT |
403 | return 0; |
404 | } | |
405 | ||
4cc27bd6 | 406 | static void cp210x_cleanup(struct usb_serial_port *port) |
1da177e4 LT |
407 | { |
408 | struct usb_serial *serial = port->serial; | |
409 | ||
441b62c1 | 410 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
411 | |
412 | if (serial->dev) { | |
413 | /* shutdown any bulk reads that might be going on */ | |
414 | if (serial->num_bulk_out) | |
415 | usb_kill_urb(port->write_urb); | |
416 | if (serial->num_bulk_in) | |
417 | usb_kill_urb(port->read_urb); | |
418 | } | |
419 | } | |
420 | ||
4cc27bd6 | 421 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 422 | { |
441b62c1 | 423 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
424 | |
425 | /* shutdown our urbs */ | |
441b62c1 | 426 | dbg("%s - shutting down urbs", __func__); |
1da177e4 LT |
427 | usb_kill_urb(port->write_urb); |
428 | usb_kill_urb(port->read_urb); | |
429 | ||
95bef012 ON |
430 | mutex_lock(&port->serial->disc_mutex); |
431 | if (!port->serial->disconnected) | |
4cc27bd6 | 432 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
95bef012 | 433 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
434 | } |
435 | ||
39a66b8d | 436 | /* |
4cc27bd6 | 437 | * cp210x_get_termios |
39a66b8d CS |
438 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
439 | * from the device, corrects any unsupported values, and configures the | |
440 | * termios structure to reflect the state of the device | |
441 | */ | |
4cc27bd6 | 442 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
443 | struct usb_serial_port *port) |
444 | { | |
445 | unsigned int baud; | |
446 | ||
447 | if (tty) { | |
4cc27bd6 | 448 | cp210x_get_termios_port(tty->driver_data, |
d2ad67b3 V |
449 | &tty->termios->c_cflag, &baud); |
450 | tty_encode_baud_rate(tty, baud, baud); | |
451 | } | |
452 | ||
453 | else { | |
454 | unsigned int cflag; | |
455 | cflag = 0; | |
4cc27bd6 | 456 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
457 | } |
458 | } | |
459 | ||
460 | /* | |
4cc27bd6 CS |
461 | * cp210x_get_termios_port |
462 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 463 | */ |
4cc27bd6 | 464 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 465 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 466 | { |
39a66b8d | 467 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
468 | unsigned int baud; |
469 | unsigned int bits; | |
1da177e4 | 470 | |
441b62c1 | 471 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 472 | |
4cc27bd6 | 473 | cp210x_get_config(port, CP210X_GET_BAUDDIV, &baud, 2); |
39a66b8d | 474 | /* Convert to baudrate */ |
1da177e4 | 475 | if (baud) |
4cc27bd6 | 476 | baud = cp210x_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud); |
1da177e4 | 477 | |
441b62c1 | 478 | dbg("%s - baud rate = %d", __func__, baud); |
d2ad67b3 | 479 | *baudp = baud; |
9ab0f202 | 480 | |
d2ad67b3 | 481 | cflag = *cflagp; |
1da177e4 | 482 | |
4cc27bd6 | 483 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 | 484 | cflag &= ~CSIZE; |
ff7eb602 AC |
485 | switch (bits & BITS_DATA_MASK) { |
486 | case BITS_DATA_5: | |
487 | dbg("%s - data bits = 5", __func__); | |
488 | cflag |= CS5; | |
489 | break; | |
490 | case BITS_DATA_6: | |
491 | dbg("%s - data bits = 6", __func__); | |
492 | cflag |= CS6; | |
493 | break; | |
494 | case BITS_DATA_7: | |
495 | dbg("%s - data bits = 7", __func__); | |
496 | cflag |= CS7; | |
497 | break; | |
498 | case BITS_DATA_8: | |
499 | dbg("%s - data bits = 8", __func__); | |
500 | cflag |= CS8; | |
501 | break; | |
502 | case BITS_DATA_9: | |
503 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
504 | __func__); | |
505 | cflag |= CS8; | |
506 | bits &= ~BITS_DATA_MASK; | |
507 | bits |= BITS_DATA_8; | |
4cc27bd6 | 508 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
509 | break; |
510 | default: | |
511 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
512 | cflag |= CS8; | |
513 | bits &= ~BITS_DATA_MASK; | |
514 | bits |= BITS_DATA_8; | |
4cc27bd6 | 515 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 516 | break; |
1da177e4 LT |
517 | } |
518 | ||
ff7eb602 AC |
519 | switch (bits & BITS_PARITY_MASK) { |
520 | case BITS_PARITY_NONE: | |
521 | dbg("%s - parity = NONE", __func__); | |
522 | cflag &= ~PARENB; | |
523 | break; | |
524 | case BITS_PARITY_ODD: | |
525 | dbg("%s - parity = ODD", __func__); | |
526 | cflag |= (PARENB|PARODD); | |
527 | break; | |
528 | case BITS_PARITY_EVEN: | |
529 | dbg("%s - parity = EVEN", __func__); | |
530 | cflag &= ~PARODD; | |
531 | cflag |= PARENB; | |
532 | break; | |
533 | case BITS_PARITY_MARK: | |
534 | dbg("%s - parity = MARK (not supported, disabling parity)", | |
535 | __func__); | |
536 | cflag &= ~PARENB; | |
537 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 538 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
539 | break; |
540 | case BITS_PARITY_SPACE: | |
541 | dbg("%s - parity = SPACE (not supported, disabling parity)", | |
542 | __func__); | |
543 | cflag &= ~PARENB; | |
544 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 545 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
546 | break; |
547 | default: | |
548 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
549 | cflag &= ~PARENB; | |
550 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 551 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 552 | break; |
1da177e4 LT |
553 | } |
554 | ||
555 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
556 | switch (bits & BITS_STOP_MASK) { |
557 | case BITS_STOP_1: | |
558 | dbg("%s - stop bits = 1", __func__); | |
559 | break; | |
560 | case BITS_STOP_1_5: | |
561 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
562 | __func__); | |
563 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 564 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
565 | break; |
566 | case BITS_STOP_2: | |
567 | dbg("%s - stop bits = 2", __func__); | |
568 | cflag |= CSTOPB; | |
569 | break; | |
570 | default: | |
571 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
572 | __func__); | |
573 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 574 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 575 | break; |
1da177e4 LT |
576 | } |
577 | ||
4cc27bd6 | 578 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 579 | if (modem_ctl[0] & 0x0008) { |
441b62c1 | 580 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
581 | cflag |= CRTSCTS; |
582 | } else { | |
441b62c1 | 583 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
584 | cflag &= ~CRTSCTS; |
585 | } | |
586 | ||
d2ad67b3 | 587 | *cflagp = cflag; |
1da177e4 LT |
588 | } |
589 | ||
4cc27bd6 | 590 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 591 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 592 | { |
9ab0f202 | 593 | unsigned int cflag, old_cflag; |
b2bdd1f5 | 594 | unsigned int baud = 0, bits; |
39a66b8d | 595 | unsigned int modem_ctl[4]; |
1da177e4 | 596 | |
441b62c1 | 597 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 598 | |
95da310e | 599 | if (!tty) |
1da177e4 | 600 | return; |
9ab0f202 | 601 | |
95da310e AC |
602 | tty->termios->c_cflag &= ~CMSPAR; |
603 | cflag = tty->termios->c_cflag; | |
01e96d28 | 604 | old_cflag = old_termios->c_cflag; |
4cc27bd6 | 605 | baud = cp210x_quantise_baudrate(tty_get_baud_rate(tty)); |
1da177e4 LT |
606 | |
607 | /* If the baud rate is to be updated*/ | |
ef8b6bcb CS |
608 | if (baud != tty_termios_baud_rate(old_termios) && baud != 0) { |
609 | dbg("%s - Setting baud rate to %d baud", __func__, | |
610 | baud); | |
4cc27bd6 | 611 | if (cp210x_set_config_single(port, CP210X_SET_BAUDDIV, |
ef8b6bcb | 612 | ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) { |
759f3634 | 613 | dbg("Baud rate requested not supported by device"); |
ef8b6bcb | 614 | baud = tty_termios_baud_rate(old_termios); |
1da177e4 LT |
615 | } |
616 | } | |
9ab0f202 | 617 | /* Report back the resulting baud rate */ |
95da310e | 618 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 | 619 | |
39a66b8d | 620 | /* If the number of data bits is to be updated */ |
1da177e4 | 621 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 622 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
623 | bits &= ~BITS_DATA_MASK; |
624 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
625 | case CS5: |
626 | bits |= BITS_DATA_5; | |
627 | dbg("%s - data bits = 5", __func__); | |
628 | break; | |
629 | case CS6: | |
630 | bits |= BITS_DATA_6; | |
631 | dbg("%s - data bits = 6", __func__); | |
632 | break; | |
633 | case CS7: | |
634 | bits |= BITS_DATA_7; | |
635 | dbg("%s - data bits = 7", __func__); | |
636 | break; | |
637 | case CS8: | |
638 | bits |= BITS_DATA_8; | |
639 | dbg("%s - data bits = 8", __func__); | |
640 | break; | |
641 | /*case CS9: | |
642 | bits |= BITS_DATA_9; | |
643 | dbg("%s - data bits = 9", __func__); | |
644 | break;*/ | |
645 | default: | |
4cc27bd6 | 646 | dbg("cp210x driver does not " |
1da177e4 LT |
647 | "support the number of bits requested," |
648 | " using 8 bit mode\n"); | |
649 | bits |= BITS_DATA_8; | |
650 | break; | |
651 | } | |
4cc27bd6 | 652 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 653 | dbg("Number of data bits requested " |
1da177e4 LT |
654 | "not supported by device\n"); |
655 | } | |
656 | ||
657 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
4cc27bd6 | 658 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
659 | bits &= ~BITS_PARITY_MASK; |
660 | if (cflag & PARENB) { | |
661 | if (cflag & PARODD) { | |
662 | bits |= BITS_PARITY_ODD; | |
441b62c1 | 663 | dbg("%s - parity = ODD", __func__); |
1da177e4 LT |
664 | } else { |
665 | bits |= BITS_PARITY_EVEN; | |
441b62c1 | 666 | dbg("%s - parity = EVEN", __func__); |
1da177e4 LT |
667 | } |
668 | } | |
4cc27bd6 | 669 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 670 | dbg("Parity mode not supported " |
1da177e4 LT |
671 | "by device\n"); |
672 | } | |
673 | ||
674 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 675 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
676 | bits &= ~BITS_STOP_MASK; |
677 | if (cflag & CSTOPB) { | |
678 | bits |= BITS_STOP_2; | |
441b62c1 | 679 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
680 | } else { |
681 | bits |= BITS_STOP_1; | |
441b62c1 | 682 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 683 | } |
4cc27bd6 | 684 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 685 | dbg("Number of stop bits requested " |
1da177e4 LT |
686 | "not supported by device\n"); |
687 | } | |
39a66b8d CS |
688 | |
689 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 690 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 691 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", |
441b62c1 | 692 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
693 | modem_ctl[2], modem_ctl[3]); |
694 | ||
695 | if (cflag & CRTSCTS) { | |
696 | modem_ctl[0] &= ~0x7B; | |
697 | modem_ctl[0] |= 0x09; | |
698 | modem_ctl[1] = 0x80; | |
441b62c1 | 699 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
700 | } else { |
701 | modem_ctl[0] &= ~0x7B; | |
702 | modem_ctl[0] |= 0x01; | |
703 | modem_ctl[1] |= 0x40; | |
441b62c1 | 704 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
705 | } |
706 | ||
707 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 708 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d | 709 | modem_ctl[2], modem_ctl[3]); |
4cc27bd6 | 710 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
711 | } |
712 | ||
713 | } | |
714 | ||
4cc27bd6 | 715 | static int cp210x_tiocmset (struct tty_struct *tty, struct file *file, |
39a66b8d CS |
716 | unsigned int set, unsigned int clear) |
717 | { | |
95da310e | 718 | struct usb_serial_port *port = tty->driver_data; |
4cc27bd6 | 719 | return cp210x_tiocmset_port(port, file, set, clear); |
d2ad67b3 V |
720 | } |
721 | ||
4cc27bd6 | 722 | static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file, |
d2ad67b3 V |
723 | unsigned int set, unsigned int clear) |
724 | { | |
b2bdd1f5 | 725 | unsigned int control = 0; |
39a66b8d | 726 | |
441b62c1 | 727 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
728 | |
729 | if (set & TIOCM_RTS) { | |
730 | control |= CONTROL_RTS; | |
731 | control |= CONTROL_WRITE_RTS; | |
732 | } | |
733 | if (set & TIOCM_DTR) { | |
734 | control |= CONTROL_DTR; | |
735 | control |= CONTROL_WRITE_DTR; | |
736 | } | |
737 | if (clear & TIOCM_RTS) { | |
738 | control &= ~CONTROL_RTS; | |
739 | control |= CONTROL_WRITE_RTS; | |
740 | } | |
741 | if (clear & TIOCM_DTR) { | |
742 | control &= ~CONTROL_DTR; | |
743 | control |= CONTROL_WRITE_DTR; | |
744 | } | |
745 | ||
441b62c1 | 746 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d | 747 | |
4cc27bd6 | 748 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
749 | } |
750 | ||
d94c7bd4 AC |
751 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
752 | { | |
753 | if (on) | |
754 | cp210x_tiocmset_port(p, NULL, TIOCM_DTR|TIOCM_RTS, 0); | |
755 | else | |
756 | cp210x_tiocmset_port(p, NULL, 0, TIOCM_DTR|TIOCM_RTS); | |
757 | } | |
758 | ||
4cc27bd6 | 759 | static int cp210x_tiocmget (struct tty_struct *tty, struct file *file) |
39a66b8d | 760 | { |
95da310e | 761 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
762 | unsigned int control; |
763 | int result; | |
39a66b8d | 764 | |
441b62c1 | 765 | dbg("%s - port %d", __func__, port->number); |
39a66b8d | 766 | |
4cc27bd6 | 767 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
768 | |
769 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
770 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
771 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
772 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
773 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
774 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
775 | ||
441b62c1 | 776 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
777 | |
778 | return result; | |
1da177e4 LT |
779 | } |
780 | ||
d94c7bd4 AC |
781 | static int cp210x_carrier_raised(struct usb_serial_port *p) |
782 | { | |
783 | unsigned int control; | |
784 | cp210x_get_config(p, CP210X_GET_MDMSTS, &control, 1); | |
785 | if (control & CONTROL_DCD) | |
786 | return 1; | |
787 | return 0; | |
788 | } | |
789 | ||
4cc27bd6 | 790 | static void cp210x_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 791 | { |
95da310e | 792 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 793 | unsigned int state; |
1da177e4 | 794 | |
441b62c1 | 795 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
796 | if (break_state == 0) |
797 | state = BREAK_OFF; | |
798 | else | |
799 | state = BREAK_ON; | |
441b62c1 | 800 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 801 | state == BREAK_OFF ? "off" : "on"); |
4cc27bd6 | 802 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
803 | } |
804 | ||
4cc27bd6 | 805 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 806 | { |
4cc27bd6 | 807 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 LT |
808 | usb_reset_device(serial->dev); |
809 | return 0; | |
810 | } | |
811 | ||
f9c99bb8 | 812 | static void cp210x_disconnect(struct usb_serial *serial) |
1da177e4 LT |
813 | { |
814 | int i; | |
815 | ||
441b62c1 | 816 | dbg("%s", __func__); |
1da177e4 | 817 | |
39a66b8d | 818 | /* Stop reads and writes on all ports */ |
ff7eb602 | 819 | for (i = 0; i < serial->num_ports; ++i) |
4cc27bd6 | 820 | cp210x_cleanup(serial->port[i]); |
1da177e4 LT |
821 | } |
822 | ||
4cc27bd6 | 823 | static int __init cp210x_init(void) |
1da177e4 LT |
824 | { |
825 | int retval; | |
826 | ||
4cc27bd6 | 827 | retval = usb_serial_register(&cp210x_device); |
1da177e4 | 828 | if (retval) |
39a66b8d | 829 | return retval; /* Failed to register */ |
1da177e4 | 830 | |
4cc27bd6 | 831 | retval = usb_register(&cp210x_driver); |
1da177e4 | 832 | if (retval) { |
39a66b8d | 833 | /* Failed to register */ |
4cc27bd6 | 834 | usb_serial_deregister(&cp210x_device); |
1da177e4 LT |
835 | return retval; |
836 | } | |
837 | ||
39a66b8d | 838 | /* Success */ |
c197a8db GKH |
839 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
840 | DRIVER_DESC "\n"); | |
1da177e4 LT |
841 | return 0; |
842 | } | |
843 | ||
4cc27bd6 | 844 | static void __exit cp210x_exit(void) |
1da177e4 | 845 | { |
4cc27bd6 CS |
846 | usb_deregister(&cp210x_driver); |
847 | usb_serial_deregister(&cp210x_device); | |
1da177e4 LT |
848 | } |
849 | ||
4cc27bd6 CS |
850 | module_init(cp210x_init); |
851 | module_exit(cp210x_exit); | |
1da177e4 LT |
852 | |
853 | MODULE_DESCRIPTION(DRIVER_DESC); | |
854 | MODULE_VERSION(DRIVER_VERSION); | |
855 | MODULE_LICENSE("GPL"); | |
856 | ||
857 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
858 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |