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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 | */ | |
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, |
d4e598f6 | 141 | .bulk_out_size = 256, |
4cc27bd6 CS |
142 | .open = cp210x_open, |
143 | .close = cp210x_close, | |
144 | .break_ctl = cp210x_break_ctl, | |
145 | .set_termios = cp210x_set_termios, | |
146 | .tiocmget = cp210x_tiocmget, | |
147 | .tiocmset = cp210x_tiocmset, | |
148 | .attach = cp210x_startup, | |
f9c99bb8 | 149 | .disconnect = cp210x_disconnect, |
d94c7bd4 AC |
150 | .dtr_rts = cp210x_dtr_rts, |
151 | .carrier_raised = cp210x_carrier_raised | |
1da177e4 LT |
152 | }; |
153 | ||
39a66b8d | 154 | /* Config request types */ |
1da177e4 LT |
155 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
156 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
157 | ||
93ef1f1f CS |
158 | /* Config request codes */ |
159 | #define CP210X_IFC_ENABLE 0x00 | |
160 | #define CP210X_SET_BAUDDIV 0x01 | |
161 | #define CP210X_GET_BAUDDIV 0x02 | |
162 | #define CP210X_SET_LINE_CTL 0x03 | |
163 | #define CP210X_GET_LINE_CTL 0x04 | |
164 | #define CP210X_SET_BREAK 0x05 | |
165 | #define CP210X_IMM_CHAR 0x06 | |
166 | #define CP210X_SET_MHS 0x07 | |
167 | #define CP210X_GET_MDMSTS 0x08 | |
168 | #define CP210X_SET_XON 0x09 | |
169 | #define CP210X_SET_XOFF 0x0A | |
170 | #define CP210X_SET_EVENTMASK 0x0B | |
171 | #define CP210X_GET_EVENTMASK 0x0C | |
172 | #define CP210X_SET_CHAR 0x0D | |
173 | #define CP210X_GET_CHARS 0x0E | |
174 | #define CP210X_GET_PROPS 0x0F | |
175 | #define CP210X_GET_COMM_STATUS 0x10 | |
176 | #define CP210X_RESET 0x11 | |
177 | #define CP210X_PURGE 0x12 | |
178 | #define CP210X_SET_FLOW 0x13 | |
179 | #define CP210X_GET_FLOW 0x14 | |
180 | #define CP210X_EMBED_EVENTS 0x15 | |
181 | #define CP210X_GET_EVENTSTATE 0x16 | |
182 | #define CP210X_SET_CHARS 0x19 | |
183 | ||
184 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
185 | #define UART_ENABLE 0x0001 |
186 | #define UART_DISABLE 0x0000 | |
187 | ||
93ef1f1f | 188 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
189 | #define BAUD_RATE_GEN_FREQ 0x384000 |
190 | ||
93ef1f1f | 191 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 192 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 193 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
194 | #define BITS_DATA_6 0X0600 |
195 | #define BITS_DATA_7 0X0700 | |
196 | #define BITS_DATA_8 0X0800 | |
197 | #define BITS_DATA_9 0X0900 | |
198 | ||
199 | #define BITS_PARITY_MASK 0x00f0 | |
200 | #define BITS_PARITY_NONE 0x0000 | |
201 | #define BITS_PARITY_ODD 0x0010 | |
202 | #define BITS_PARITY_EVEN 0x0020 | |
203 | #define BITS_PARITY_MARK 0x0030 | |
204 | #define BITS_PARITY_SPACE 0x0040 | |
205 | ||
206 | #define BITS_STOP_MASK 0x000f | |
207 | #define BITS_STOP_1 0x0000 | |
208 | #define BITS_STOP_1_5 0x0001 | |
209 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 210 | |
93ef1f1f | 211 | /* CP210X_SET_BREAK */ |
1da177e4 LT |
212 | #define BREAK_ON 0x0000 |
213 | #define BREAK_OFF 0x0001 | |
214 | ||
93ef1f1f | 215 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
216 | #define CONTROL_DTR 0x0001 |
217 | #define CONTROL_RTS 0x0002 | |
218 | #define CONTROL_CTS 0x0010 | |
219 | #define CONTROL_DSR 0x0020 | |
220 | #define CONTROL_RING 0x0040 | |
221 | #define CONTROL_DCD 0x0080 | |
222 | #define CONTROL_WRITE_DTR 0x0100 | |
223 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 224 | |
39a66b8d | 225 | /* |
4cc27bd6 CS |
226 | * cp210x_get_config |
227 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
228 | * 'size' is specified in bytes. |
229 | * 'data' is a pointer to a pre-allocated array of integers large | |
230 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
231 | */ | |
4cc27bd6 | 232 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 233 | unsigned int *data, int size) |
1da177e4 LT |
234 | { |
235 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 236 | __le32 *buf; |
39a66b8d CS |
237 | int result, i, length; |
238 | ||
239 | /* Number of integers required to contain the array */ | |
240 | length = (((size - 1) | 3) + 1)/4; | |
241 | ||
53ebb3b8 | 242 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 243 | if (!buf) { |
441b62c1 | 244 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
245 | return -ENOMEM; |
246 | } | |
1da177e4 | 247 | |
39a66b8d | 248 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 249 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 250 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 251 | 0, buf, size, 300); |
1da177e4 | 252 | |
39a66b8d | 253 | /* Convert data into an array of integers */ |
ff7eb602 | 254 | for (i = 0; i < length; i++) |
39a66b8d | 255 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 256 | |
39a66b8d | 257 | kfree(buf); |
1da177e4 | 258 | |
39a66b8d | 259 | if (result != size) { |
97324955 | 260 | dbg("%s - Unable to send config request, " |
39a66b8d | 261 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 262 | __func__, request, size, result); |
39a66b8d CS |
263 | return -EPROTO; |
264 | } | |
1da177e4 | 265 | |
39a66b8d | 266 | return 0; |
1da177e4 LT |
267 | } |
268 | ||
39a66b8d | 269 | /* |
4cc27bd6 CS |
270 | * cp210x_set_config |
271 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
272 | * Values less than 16 bits wide are sent directly |
273 | * 'size' is specified in bytes. | |
274 | */ | |
4cc27bd6 | 275 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 276 | unsigned int *data, int size) |
1da177e4 LT |
277 | { |
278 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 279 | __le32 *buf; |
39a66b8d | 280 | int result, i, length; |
1da177e4 | 281 | |
39a66b8d CS |
282 | /* Number of integers required to contain the array */ |
283 | length = (((size - 1) | 3) + 1)/4; | |
284 | ||
53ebb3b8 | 285 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
286 | if (!buf) { |
287 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 288 | __func__); |
39a66b8d CS |
289 | return -ENOMEM; |
290 | } | |
291 | ||
292 | /* Array of integers into bytes */ | |
293 | for (i = 0; i < length; i++) | |
294 | buf[i] = cpu_to_le32(data[i]); | |
295 | ||
296 | if (size > 2) { | |
ff7eb602 | 297 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
298 | usb_sndctrlpipe(serial->dev, 0), |
299 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
300 | 0, buf, size, 300); | |
301 | } else { | |
ff7eb602 | 302 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
303 | usb_sndctrlpipe(serial->dev, 0), |
304 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
305 | 0, NULL, 0, 300); | |
1da177e4 LT |
306 | } |
307 | ||
39a66b8d CS |
308 | kfree(buf); |
309 | ||
310 | if ((size > 2 && result != size) || result < 0) { | |
97324955 | 311 | dbg("%s - Unable to send request, " |
39a66b8d | 312 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 313 | __func__, request, size, result); |
39a66b8d CS |
314 | return -EPROTO; |
315 | } | |
1da177e4 LT |
316 | |
317 | return 0; | |
318 | } | |
319 | ||
39a66b8d | 320 | /* |
4cc27bd6 CS |
321 | * cp210x_set_config_single |
322 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
323 | * without requiring an integer pointer |
324 | */ | |
4cc27bd6 | 325 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
326 | u8 request, unsigned int data) |
327 | { | |
4cc27bd6 | 328 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
329 | } |
330 | ||
ef8b6bcb | 331 | /* |
4cc27bd6 | 332 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
333 | * Quantises the baud rate as per AN205 Table 1 |
334 | */ | |
4cc27bd6 | 335 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) { |
ef8b6bcb CS |
336 | if (baud <= 56) baud = 0; |
337 | else if (baud <= 300) baud = 300; | |
338 | else if (baud <= 600) baud = 600; | |
339 | else if (baud <= 1200) baud = 1200; | |
340 | else if (baud <= 1800) baud = 1800; | |
341 | else if (baud <= 2400) baud = 2400; | |
342 | else if (baud <= 4000) baud = 4000; | |
343 | else if (baud <= 4803) baud = 4800; | |
344 | else if (baud <= 7207) baud = 7200; | |
345 | else if (baud <= 9612) baud = 9600; | |
346 | else if (baud <= 14428) baud = 14400; | |
347 | else if (baud <= 16062) baud = 16000; | |
348 | else if (baud <= 19250) baud = 19200; | |
349 | else if (baud <= 28912) baud = 28800; | |
350 | else if (baud <= 38601) baud = 38400; | |
351 | else if (baud <= 51558) baud = 51200; | |
352 | else if (baud <= 56280) baud = 56000; | |
353 | else if (baud <= 58053) baud = 57600; | |
354 | else if (baud <= 64111) baud = 64000; | |
355 | else if (baud <= 77608) baud = 76800; | |
356 | else if (baud <= 117028) baud = 115200; | |
357 | else if (baud <= 129347) baud = 128000; | |
358 | else if (baud <= 156868) baud = 153600; | |
359 | else if (baud <= 237832) baud = 230400; | |
360 | else if (baud <= 254234) baud = 250000; | |
361 | else if (baud <= 273066) baud = 256000; | |
362 | else if (baud <= 491520) baud = 460800; | |
363 | else if (baud <= 567138) baud = 500000; | |
364 | else if (baud <= 670254) baud = 576000; | |
365 | else if (baud <= 1053257) baud = 921600; | |
366 | else if (baud <= 1474560) baud = 1228800; | |
367 | else if (baud <= 2457600) baud = 1843200; | |
368 | else baud = 3686400; | |
369 | return baud; | |
370 | } | |
371 | ||
a509a7e4 | 372 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
373 | { |
374 | struct usb_serial *serial = port->serial; | |
375 | int result; | |
376 | ||
441b62c1 | 377 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 378 | |
4cc27bd6 | 379 | if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) { |
1da177e4 | 380 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
441b62c1 | 381 | __func__); |
1da177e4 LT |
382 | return -EPROTO; |
383 | } | |
384 | ||
385 | /* Start reading from the device */ | |
ff7eb602 | 386 | usb_fill_bulk_urb(port->read_urb, serial->dev, |
1da177e4 LT |
387 | usb_rcvbulkpipe(serial->dev, |
388 | port->bulk_in_endpointAddress), | |
389 | port->read_urb->transfer_buffer, | |
390 | port->read_urb->transfer_buffer_length, | |
391 | serial->type->read_bulk_callback, | |
392 | port); | |
393 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
394 | if (result) { | |
395 | dev_err(&port->dev, "%s - failed resubmitting read urb, " | |
441b62c1 | 396 | "error %d\n", __func__, result); |
1da177e4 LT |
397 | return result; |
398 | } | |
399 | ||
39a66b8d | 400 | /* Configure the termios structure */ |
4cc27bd6 | 401 | cp210x_get_termios(tty, port); |
1da177e4 LT |
402 | return 0; |
403 | } | |
404 | ||
4cc27bd6 | 405 | static void cp210x_cleanup(struct usb_serial_port *port) |
1da177e4 LT |
406 | { |
407 | struct usb_serial *serial = port->serial; | |
408 | ||
441b62c1 | 409 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
410 | |
411 | if (serial->dev) { | |
412 | /* shutdown any bulk reads that might be going on */ | |
413 | if (serial->num_bulk_out) | |
414 | usb_kill_urb(port->write_urb); | |
415 | if (serial->num_bulk_in) | |
416 | usb_kill_urb(port->read_urb); | |
417 | } | |
418 | } | |
419 | ||
4cc27bd6 | 420 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 421 | { |
441b62c1 | 422 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
423 | |
424 | /* shutdown our urbs */ | |
441b62c1 | 425 | dbg("%s - shutting down urbs", __func__); |
1da177e4 LT |
426 | usb_kill_urb(port->write_urb); |
427 | usb_kill_urb(port->read_urb); | |
428 | ||
95bef012 ON |
429 | mutex_lock(&port->serial->disc_mutex); |
430 | if (!port->serial->disconnected) | |
4cc27bd6 | 431 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
95bef012 | 432 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
433 | } |
434 | ||
39a66b8d | 435 | /* |
4cc27bd6 | 436 | * cp210x_get_termios |
39a66b8d CS |
437 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
438 | * from the device, corrects any unsupported values, and configures the | |
439 | * termios structure to reflect the state of the device | |
440 | */ | |
4cc27bd6 | 441 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
442 | struct usb_serial_port *port) |
443 | { | |
444 | unsigned int baud; | |
445 | ||
446 | if (tty) { | |
4cc27bd6 | 447 | cp210x_get_termios_port(tty->driver_data, |
d2ad67b3 V |
448 | &tty->termios->c_cflag, &baud); |
449 | tty_encode_baud_rate(tty, baud, baud); | |
450 | } | |
451 | ||
452 | else { | |
453 | unsigned int cflag; | |
454 | cflag = 0; | |
4cc27bd6 | 455 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
456 | } |
457 | } | |
458 | ||
459 | /* | |
4cc27bd6 CS |
460 | * cp210x_get_termios_port |
461 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 462 | */ |
4cc27bd6 | 463 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 464 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 465 | { |
39a66b8d | 466 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
467 | unsigned int baud; |
468 | unsigned int bits; | |
1da177e4 | 469 | |
441b62c1 | 470 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 471 | |
4cc27bd6 | 472 | cp210x_get_config(port, CP210X_GET_BAUDDIV, &baud, 2); |
39a66b8d | 473 | /* Convert to baudrate */ |
1da177e4 | 474 | if (baud) |
4cc27bd6 | 475 | baud = cp210x_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud); |
1da177e4 | 476 | |
441b62c1 | 477 | dbg("%s - baud rate = %d", __func__, baud); |
d2ad67b3 | 478 | *baudp = baud; |
9ab0f202 | 479 | |
d2ad67b3 | 480 | cflag = *cflagp; |
1da177e4 | 481 | |
4cc27bd6 | 482 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 | 483 | cflag &= ~CSIZE; |
ff7eb602 AC |
484 | switch (bits & BITS_DATA_MASK) { |
485 | case BITS_DATA_5: | |
486 | dbg("%s - data bits = 5", __func__); | |
487 | cflag |= CS5; | |
488 | break; | |
489 | case BITS_DATA_6: | |
490 | dbg("%s - data bits = 6", __func__); | |
491 | cflag |= CS6; | |
492 | break; | |
493 | case BITS_DATA_7: | |
494 | dbg("%s - data bits = 7", __func__); | |
495 | cflag |= CS7; | |
496 | break; | |
497 | case BITS_DATA_8: | |
498 | dbg("%s - data bits = 8", __func__); | |
499 | cflag |= CS8; | |
500 | break; | |
501 | case BITS_DATA_9: | |
502 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
503 | __func__); | |
504 | cflag |= CS8; | |
505 | bits &= ~BITS_DATA_MASK; | |
506 | bits |= BITS_DATA_8; | |
4cc27bd6 | 507 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
508 | break; |
509 | default: | |
510 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
511 | cflag |= CS8; | |
512 | bits &= ~BITS_DATA_MASK; | |
513 | bits |= BITS_DATA_8; | |
4cc27bd6 | 514 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 515 | break; |
1da177e4 LT |
516 | } |
517 | ||
ff7eb602 AC |
518 | switch (bits & BITS_PARITY_MASK) { |
519 | case BITS_PARITY_NONE: | |
520 | dbg("%s - parity = NONE", __func__); | |
521 | cflag &= ~PARENB; | |
522 | break; | |
523 | case BITS_PARITY_ODD: | |
524 | dbg("%s - parity = ODD", __func__); | |
525 | cflag |= (PARENB|PARODD); | |
526 | break; | |
527 | case BITS_PARITY_EVEN: | |
528 | dbg("%s - parity = EVEN", __func__); | |
529 | cflag &= ~PARODD; | |
530 | cflag |= PARENB; | |
531 | break; | |
532 | case BITS_PARITY_MARK: | |
533 | dbg("%s - parity = MARK (not supported, disabling parity)", | |
534 | __func__); | |
535 | cflag &= ~PARENB; | |
536 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 537 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
538 | break; |
539 | case BITS_PARITY_SPACE: | |
540 | dbg("%s - parity = SPACE (not supported, disabling parity)", | |
541 | __func__); | |
542 | cflag &= ~PARENB; | |
543 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 544 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
545 | break; |
546 | default: | |
547 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
548 | cflag &= ~PARENB; | |
549 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 550 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 551 | break; |
1da177e4 LT |
552 | } |
553 | ||
554 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
555 | switch (bits & BITS_STOP_MASK) { |
556 | case BITS_STOP_1: | |
557 | dbg("%s - stop bits = 1", __func__); | |
558 | break; | |
559 | case BITS_STOP_1_5: | |
560 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
561 | __func__); | |
562 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 563 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
564 | break; |
565 | case BITS_STOP_2: | |
566 | dbg("%s - stop bits = 2", __func__); | |
567 | cflag |= CSTOPB; | |
568 | break; | |
569 | default: | |
570 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
571 | __func__); | |
572 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 573 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 574 | break; |
1da177e4 LT |
575 | } |
576 | ||
4cc27bd6 | 577 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 578 | if (modem_ctl[0] & 0x0008) { |
441b62c1 | 579 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
580 | cflag |= CRTSCTS; |
581 | } else { | |
441b62c1 | 582 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
583 | cflag &= ~CRTSCTS; |
584 | } | |
585 | ||
d2ad67b3 | 586 | *cflagp = cflag; |
1da177e4 LT |
587 | } |
588 | ||
4cc27bd6 | 589 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 590 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 591 | { |
9ab0f202 | 592 | unsigned int cflag, old_cflag; |
b2bdd1f5 | 593 | unsigned int baud = 0, bits; |
39a66b8d | 594 | unsigned int modem_ctl[4]; |
1da177e4 | 595 | |
441b62c1 | 596 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 597 | |
95da310e | 598 | if (!tty) |
1da177e4 | 599 | return; |
9ab0f202 | 600 | |
95da310e AC |
601 | tty->termios->c_cflag &= ~CMSPAR; |
602 | cflag = tty->termios->c_cflag; | |
01e96d28 | 603 | old_cflag = old_termios->c_cflag; |
4cc27bd6 | 604 | baud = cp210x_quantise_baudrate(tty_get_baud_rate(tty)); |
1da177e4 LT |
605 | |
606 | /* If the baud rate is to be updated*/ | |
ef8b6bcb CS |
607 | if (baud != tty_termios_baud_rate(old_termios) && baud != 0) { |
608 | dbg("%s - Setting baud rate to %d baud", __func__, | |
609 | baud); | |
4cc27bd6 | 610 | if (cp210x_set_config_single(port, CP210X_SET_BAUDDIV, |
ef8b6bcb | 611 | ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) { |
759f3634 | 612 | dbg("Baud rate requested not supported by device"); |
ef8b6bcb | 613 | baud = tty_termios_baud_rate(old_termios); |
1da177e4 LT |
614 | } |
615 | } | |
9ab0f202 | 616 | /* Report back the resulting baud rate */ |
95da310e | 617 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 | 618 | |
39a66b8d | 619 | /* If the number of data bits is to be updated */ |
1da177e4 | 620 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 621 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
622 | bits &= ~BITS_DATA_MASK; |
623 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
624 | case CS5: |
625 | bits |= BITS_DATA_5; | |
626 | dbg("%s - data bits = 5", __func__); | |
627 | break; | |
628 | case CS6: | |
629 | bits |= BITS_DATA_6; | |
630 | dbg("%s - data bits = 6", __func__); | |
631 | break; | |
632 | case CS7: | |
633 | bits |= BITS_DATA_7; | |
634 | dbg("%s - data bits = 7", __func__); | |
635 | break; | |
636 | case CS8: | |
637 | bits |= BITS_DATA_8; | |
638 | dbg("%s - data bits = 8", __func__); | |
639 | break; | |
640 | /*case CS9: | |
641 | bits |= BITS_DATA_9; | |
642 | dbg("%s - data bits = 9", __func__); | |
643 | break;*/ | |
644 | default: | |
4cc27bd6 | 645 | dbg("cp210x driver does not " |
1da177e4 LT |
646 | "support the number of bits requested," |
647 | " using 8 bit mode\n"); | |
648 | bits |= BITS_DATA_8; | |
649 | break; | |
650 | } | |
4cc27bd6 | 651 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 652 | dbg("Number of data bits requested " |
1da177e4 LT |
653 | "not supported by device\n"); |
654 | } | |
655 | ||
656 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
4cc27bd6 | 657 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
658 | bits &= ~BITS_PARITY_MASK; |
659 | if (cflag & PARENB) { | |
660 | if (cflag & PARODD) { | |
661 | bits |= BITS_PARITY_ODD; | |
441b62c1 | 662 | dbg("%s - parity = ODD", __func__); |
1da177e4 LT |
663 | } else { |
664 | bits |= BITS_PARITY_EVEN; | |
441b62c1 | 665 | dbg("%s - parity = EVEN", __func__); |
1da177e4 LT |
666 | } |
667 | } | |
4cc27bd6 | 668 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 669 | dbg("Parity mode not supported " |
1da177e4 LT |
670 | "by device\n"); |
671 | } | |
672 | ||
673 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 674 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
675 | bits &= ~BITS_STOP_MASK; |
676 | if (cflag & CSTOPB) { | |
677 | bits |= BITS_STOP_2; | |
441b62c1 | 678 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
679 | } else { |
680 | bits |= BITS_STOP_1; | |
441b62c1 | 681 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 682 | } |
4cc27bd6 | 683 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 684 | dbg("Number of stop bits requested " |
1da177e4 LT |
685 | "not supported by device\n"); |
686 | } | |
39a66b8d CS |
687 | |
688 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 689 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 690 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", |
441b62c1 | 691 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
692 | modem_ctl[2], modem_ctl[3]); |
693 | ||
694 | if (cflag & CRTSCTS) { | |
695 | modem_ctl[0] &= ~0x7B; | |
696 | modem_ctl[0] |= 0x09; | |
697 | modem_ctl[1] = 0x80; | |
441b62c1 | 698 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
699 | } else { |
700 | modem_ctl[0] &= ~0x7B; | |
701 | modem_ctl[0] |= 0x01; | |
702 | modem_ctl[1] |= 0x40; | |
441b62c1 | 703 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
704 | } |
705 | ||
706 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 707 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d | 708 | modem_ctl[2], modem_ctl[3]); |
4cc27bd6 | 709 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
710 | } |
711 | ||
712 | } | |
713 | ||
4cc27bd6 | 714 | static int cp210x_tiocmset (struct tty_struct *tty, struct file *file, |
39a66b8d CS |
715 | unsigned int set, unsigned int clear) |
716 | { | |
95da310e | 717 | struct usb_serial_port *port = tty->driver_data; |
4cc27bd6 | 718 | return cp210x_tiocmset_port(port, file, set, clear); |
d2ad67b3 V |
719 | } |
720 | ||
4cc27bd6 | 721 | static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file, |
d2ad67b3 V |
722 | unsigned int set, unsigned int clear) |
723 | { | |
b2bdd1f5 | 724 | unsigned int control = 0; |
39a66b8d | 725 | |
441b62c1 | 726 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
727 | |
728 | if (set & TIOCM_RTS) { | |
729 | control |= CONTROL_RTS; | |
730 | control |= CONTROL_WRITE_RTS; | |
731 | } | |
732 | if (set & TIOCM_DTR) { | |
733 | control |= CONTROL_DTR; | |
734 | control |= CONTROL_WRITE_DTR; | |
735 | } | |
736 | if (clear & TIOCM_RTS) { | |
737 | control &= ~CONTROL_RTS; | |
738 | control |= CONTROL_WRITE_RTS; | |
739 | } | |
740 | if (clear & TIOCM_DTR) { | |
741 | control &= ~CONTROL_DTR; | |
742 | control |= CONTROL_WRITE_DTR; | |
743 | } | |
744 | ||
441b62c1 | 745 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d | 746 | |
4cc27bd6 | 747 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
748 | } |
749 | ||
d94c7bd4 AC |
750 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
751 | { | |
752 | if (on) | |
753 | cp210x_tiocmset_port(p, NULL, TIOCM_DTR|TIOCM_RTS, 0); | |
754 | else | |
755 | cp210x_tiocmset_port(p, NULL, 0, TIOCM_DTR|TIOCM_RTS); | |
756 | } | |
757 | ||
4cc27bd6 | 758 | static int cp210x_tiocmget (struct tty_struct *tty, struct file *file) |
39a66b8d | 759 | { |
95da310e | 760 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
761 | unsigned int control; |
762 | int result; | |
39a66b8d | 763 | |
441b62c1 | 764 | dbg("%s - port %d", __func__, port->number); |
39a66b8d | 765 | |
4cc27bd6 | 766 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
767 | |
768 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
769 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
770 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
771 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
772 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
773 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
774 | ||
441b62c1 | 775 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
776 | |
777 | return result; | |
1da177e4 LT |
778 | } |
779 | ||
d94c7bd4 AC |
780 | static int cp210x_carrier_raised(struct usb_serial_port *p) |
781 | { | |
782 | unsigned int control; | |
783 | cp210x_get_config(p, CP210X_GET_MDMSTS, &control, 1); | |
784 | if (control & CONTROL_DCD) | |
785 | return 1; | |
786 | return 0; | |
787 | } | |
788 | ||
4cc27bd6 | 789 | static void cp210x_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 790 | { |
95da310e | 791 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 792 | unsigned int state; |
1da177e4 | 793 | |
441b62c1 | 794 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
795 | if (break_state == 0) |
796 | state = BREAK_OFF; | |
797 | else | |
798 | state = BREAK_ON; | |
441b62c1 | 799 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 800 | state == BREAK_OFF ? "off" : "on"); |
4cc27bd6 | 801 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
802 | } |
803 | ||
4cc27bd6 | 804 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 805 | { |
4cc27bd6 | 806 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 LT |
807 | usb_reset_device(serial->dev); |
808 | return 0; | |
809 | } | |
810 | ||
f9c99bb8 | 811 | static void cp210x_disconnect(struct usb_serial *serial) |
1da177e4 LT |
812 | { |
813 | int i; | |
814 | ||
441b62c1 | 815 | dbg("%s", __func__); |
1da177e4 | 816 | |
39a66b8d | 817 | /* Stop reads and writes on all ports */ |
ff7eb602 | 818 | for (i = 0; i < serial->num_ports; ++i) |
4cc27bd6 | 819 | cp210x_cleanup(serial->port[i]); |
1da177e4 LT |
820 | } |
821 | ||
4cc27bd6 | 822 | static int __init cp210x_init(void) |
1da177e4 LT |
823 | { |
824 | int retval; | |
825 | ||
4cc27bd6 | 826 | retval = usb_serial_register(&cp210x_device); |
1da177e4 | 827 | if (retval) |
39a66b8d | 828 | return retval; /* Failed to register */ |
1da177e4 | 829 | |
4cc27bd6 | 830 | retval = usb_register(&cp210x_driver); |
1da177e4 | 831 | if (retval) { |
39a66b8d | 832 | /* Failed to register */ |
4cc27bd6 | 833 | usb_serial_deregister(&cp210x_device); |
1da177e4 LT |
834 | return retval; |
835 | } | |
836 | ||
39a66b8d | 837 | /* Success */ |
c197a8db GKH |
838 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
839 | DRIVER_DESC "\n"); | |
1da177e4 LT |
840 | return 0; |
841 | } | |
842 | ||
4cc27bd6 | 843 | static void __exit cp210x_exit(void) |
1da177e4 | 844 | { |
4cc27bd6 CS |
845 | usb_deregister(&cp210x_driver); |
846 | usb_serial_deregister(&cp210x_device); | |
1da177e4 LT |
847 | } |
848 | ||
4cc27bd6 CS |
849 | module_init(cp210x_init); |
850 | module_exit(cp210x_exit); | |
1da177e4 LT |
851 | |
852 | MODULE_DESCRIPTION(DRIVER_DESC); | |
853 | MODULE_VERSION(DRIVER_VERSION); | |
854 | MODULE_LICENSE("GPL"); | |
855 | ||
856 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
857 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |