Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Silicon Laboratories CP2101/CP2102 USB to RS232 serial adaptor driver | |
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" |
1da177e4 LT |
31 | #define DRIVER_DESC "Silicon Labs CP2101/CP2102 RS232 serial adaptor driver" |
32 | ||
33 | /* | |
34 | * Function Prototypes | |
35 | */ | |
95da310e AC |
36 | static int cp2101_open(struct tty_struct *, struct usb_serial_port *, |
37 | struct file *); | |
38 | static void cp2101_cleanup(struct usb_serial_port *); | |
335f8514 | 39 | static void cp2101_close(struct usb_serial_port *); |
d2ad67b3 V |
40 | static void cp2101_get_termios(struct tty_struct *, |
41 | struct usb_serial_port *port); | |
42 | static void cp2101_get_termios_port(struct usb_serial_port *port, | |
43 | unsigned int *cflagp, unsigned int *baudp); | |
95da310e AC |
44 | static void cp2101_set_termios(struct tty_struct *, struct usb_serial_port *, |
45 | struct ktermios*); | |
ff7eb602 AC |
46 | static int cp2101_tiocmget(struct tty_struct *, struct file *); |
47 | static int cp2101_tiocmset(struct tty_struct *, struct file *, | |
39a66b8d | 48 | unsigned int, unsigned int); |
d2ad67b3 V |
49 | static int cp2101_tiocmset_port(struct usb_serial_port *port, struct file *, |
50 | unsigned int, unsigned int); | |
95da310e | 51 | static void cp2101_break_ctl(struct tty_struct *, int); |
ff7eb602 AC |
52 | static int cp2101_startup(struct usb_serial *); |
53 | static void cp2101_shutdown(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 */ |
5de8b3ac | 70 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 71 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
92f5cae2 | 72 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 73 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 74 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
e988fc8a CS |
75 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
76 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 77 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 78 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 79 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 80 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
fc4bd64c JH |
81 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
82 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
e988fc8a | 83 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
c6535668 | 84 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 85 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
59fba744 | 86 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
78001e3d BS |
87 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
88 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 89 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
b7c7cbc8 | 90 | { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ |
78001e3d | 91 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 92 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
95bec45d | 93 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */ |
e8898681 | 94 | { USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */ |
b7c7cbc8 | 95 | { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ |
ba0f332c | 96 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
881e3c98 | 97 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
d23bac9f | 98 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
e988fc8a | 99 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 100 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
5de8b3ac CS |
101 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
102 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
103 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
104 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 105 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 106 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 107 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 108 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
5de8b3ac | 109 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 110 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
ba0f332c | 111 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ |
39a66b8d | 112 | { } /* Terminating Entry */ |
1da177e4 LT |
113 | }; |
114 | ||
ff7eb602 | 115 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
116 | |
117 | static struct usb_driver cp2101_driver = { | |
269bda1c | 118 | .name = "cp2101", |
1da177e4 LT |
119 | .probe = usb_serial_probe, |
120 | .disconnect = usb_serial_disconnect, | |
121 | .id_table = id_table, | |
ba9dc657 | 122 | .no_dynamic_id = 1, |
1da177e4 LT |
123 | }; |
124 | ||
ea65370d | 125 | static struct usb_serial_driver cp2101_device = { |
18fcac35 GKH |
126 | .driver = { |
127 | .owner = THIS_MODULE, | |
269bda1c | 128 | .name = "cp2101", |
18fcac35 | 129 | }, |
d9b1b787 | 130 | .usb_driver = &cp2101_driver, |
1da177e4 | 131 | .id_table = id_table, |
1da177e4 LT |
132 | .num_ports = 1, |
133 | .open = cp2101_open, | |
134 | .close = cp2101_close, | |
135 | .break_ctl = cp2101_break_ctl, | |
136 | .set_termios = cp2101_set_termios, | |
39a66b8d CS |
137 | .tiocmget = cp2101_tiocmget, |
138 | .tiocmset = cp2101_tiocmset, | |
1da177e4 LT |
139 | .attach = cp2101_startup, |
140 | .shutdown = cp2101_shutdown, | |
141 | }; | |
142 | ||
39a66b8d | 143 | /* Config request types */ |
1da177e4 LT |
144 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
145 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
146 | ||
93ef1f1f CS |
147 | /* Config request codes */ |
148 | #define CP210X_IFC_ENABLE 0x00 | |
149 | #define CP210X_SET_BAUDDIV 0x01 | |
150 | #define CP210X_GET_BAUDDIV 0x02 | |
151 | #define CP210X_SET_LINE_CTL 0x03 | |
152 | #define CP210X_GET_LINE_CTL 0x04 | |
153 | #define CP210X_SET_BREAK 0x05 | |
154 | #define CP210X_IMM_CHAR 0x06 | |
155 | #define CP210X_SET_MHS 0x07 | |
156 | #define CP210X_GET_MDMSTS 0x08 | |
157 | #define CP210X_SET_XON 0x09 | |
158 | #define CP210X_SET_XOFF 0x0A | |
159 | #define CP210X_SET_EVENTMASK 0x0B | |
160 | #define CP210X_GET_EVENTMASK 0x0C | |
161 | #define CP210X_SET_CHAR 0x0D | |
162 | #define CP210X_GET_CHARS 0x0E | |
163 | #define CP210X_GET_PROPS 0x0F | |
164 | #define CP210X_GET_COMM_STATUS 0x10 | |
165 | #define CP210X_RESET 0x11 | |
166 | #define CP210X_PURGE 0x12 | |
167 | #define CP210X_SET_FLOW 0x13 | |
168 | #define CP210X_GET_FLOW 0x14 | |
169 | #define CP210X_EMBED_EVENTS 0x15 | |
170 | #define CP210X_GET_EVENTSTATE 0x16 | |
171 | #define CP210X_SET_CHARS 0x19 | |
172 | ||
173 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
174 | #define UART_ENABLE 0x0001 |
175 | #define UART_DISABLE 0x0000 | |
176 | ||
93ef1f1f | 177 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
178 | #define BAUD_RATE_GEN_FREQ 0x384000 |
179 | ||
93ef1f1f | 180 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 181 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 182 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
183 | #define BITS_DATA_6 0X0600 |
184 | #define BITS_DATA_7 0X0700 | |
185 | #define BITS_DATA_8 0X0800 | |
186 | #define BITS_DATA_9 0X0900 | |
187 | ||
188 | #define BITS_PARITY_MASK 0x00f0 | |
189 | #define BITS_PARITY_NONE 0x0000 | |
190 | #define BITS_PARITY_ODD 0x0010 | |
191 | #define BITS_PARITY_EVEN 0x0020 | |
192 | #define BITS_PARITY_MARK 0x0030 | |
193 | #define BITS_PARITY_SPACE 0x0040 | |
194 | ||
195 | #define BITS_STOP_MASK 0x000f | |
196 | #define BITS_STOP_1 0x0000 | |
197 | #define BITS_STOP_1_5 0x0001 | |
198 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 199 | |
93ef1f1f | 200 | /* CP210X_SET_BREAK */ |
1da177e4 LT |
201 | #define BREAK_ON 0x0000 |
202 | #define BREAK_OFF 0x0001 | |
203 | ||
93ef1f1f | 204 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
205 | #define CONTROL_DTR 0x0001 |
206 | #define CONTROL_RTS 0x0002 | |
207 | #define CONTROL_CTS 0x0010 | |
208 | #define CONTROL_DSR 0x0020 | |
209 | #define CONTROL_RING 0x0040 | |
210 | #define CONTROL_DCD 0x0080 | |
211 | #define CONTROL_WRITE_DTR 0x0100 | |
212 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 213 | |
39a66b8d CS |
214 | /* |
215 | * cp2101_get_config | |
216 | * Reads from the CP2101 configuration registers | |
217 | * 'size' is specified in bytes. | |
218 | * 'data' is a pointer to a pre-allocated array of integers large | |
219 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
220 | */ | |
95da310e | 221 | static int cp2101_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 222 | unsigned int *data, int size) |
1da177e4 LT |
223 | { |
224 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 225 | __le32 *buf; |
39a66b8d CS |
226 | int result, i, length; |
227 | ||
228 | /* Number of integers required to contain the array */ | |
229 | length = (((size - 1) | 3) + 1)/4; | |
230 | ||
53ebb3b8 | 231 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 232 | if (!buf) { |
441b62c1 | 233 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
234 | return -ENOMEM; |
235 | } | |
1da177e4 | 236 | |
39a66b8d | 237 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 238 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 239 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 240 | 0, buf, size, 300); |
1da177e4 | 241 | |
39a66b8d | 242 | /* Convert data into an array of integers */ |
ff7eb602 | 243 | for (i = 0; i < length; i++) |
39a66b8d | 244 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 245 | |
39a66b8d | 246 | kfree(buf); |
1da177e4 | 247 | |
39a66b8d | 248 | if (result != size) { |
97324955 | 249 | dbg("%s - Unable to send config request, " |
39a66b8d | 250 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 251 | __func__, request, size, result); |
39a66b8d CS |
252 | return -EPROTO; |
253 | } | |
1da177e4 | 254 | |
39a66b8d | 255 | return 0; |
1da177e4 LT |
256 | } |
257 | ||
39a66b8d CS |
258 | /* |
259 | * cp2101_set_config | |
260 | * Writes to the CP2101 configuration registers | |
261 | * Values less than 16 bits wide are sent directly | |
262 | * 'size' is specified in bytes. | |
263 | */ | |
95da310e | 264 | static int cp2101_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 265 | unsigned int *data, int size) |
1da177e4 LT |
266 | { |
267 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 268 | __le32 *buf; |
39a66b8d | 269 | int result, i, length; |
1da177e4 | 270 | |
39a66b8d CS |
271 | /* Number of integers required to contain the array */ |
272 | length = (((size - 1) | 3) + 1)/4; | |
273 | ||
53ebb3b8 | 274 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
275 | if (!buf) { |
276 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 277 | __func__); |
39a66b8d CS |
278 | return -ENOMEM; |
279 | } | |
280 | ||
281 | /* Array of integers into bytes */ | |
282 | for (i = 0; i < length; i++) | |
283 | buf[i] = cpu_to_le32(data[i]); | |
284 | ||
285 | if (size > 2) { | |
ff7eb602 | 286 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
287 | usb_sndctrlpipe(serial->dev, 0), |
288 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
289 | 0, buf, size, 300); | |
290 | } else { | |
ff7eb602 | 291 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
292 | usb_sndctrlpipe(serial->dev, 0), |
293 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
294 | 0, NULL, 0, 300); | |
1da177e4 LT |
295 | } |
296 | ||
39a66b8d CS |
297 | kfree(buf); |
298 | ||
299 | if ((size > 2 && result != size) || result < 0) { | |
97324955 | 300 | dbg("%s - Unable to send request, " |
39a66b8d | 301 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 302 | __func__, request, size, result); |
39a66b8d CS |
303 | return -EPROTO; |
304 | } | |
1da177e4 | 305 | |
39a66b8d | 306 | /* Single data value */ |
ff7eb602 | 307 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
308 | usb_sndctrlpipe(serial->dev, 0), |
309 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
310 | 0, NULL, 0, 300); | |
1da177e4 LT |
311 | return 0; |
312 | } | |
313 | ||
39a66b8d CS |
314 | /* |
315 | * cp2101_set_config_single | |
316 | * Convenience function for calling cp2101_set_config on single data values | |
317 | * without requiring an integer pointer | |
318 | */ | |
95da310e | 319 | static inline int cp2101_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
320 | u8 request, unsigned int data) |
321 | { | |
322 | return cp2101_set_config(port, request, &data, 2); | |
323 | } | |
324 | ||
ef8b6bcb CS |
325 | /* |
326 | * cp2101_quantise_baudrate | |
327 | * Quantises the baud rate as per AN205 Table 1 | |
328 | */ | |
329 | static unsigned int cp2101_quantise_baudrate(unsigned int baud) { | |
330 | if (baud <= 56) baud = 0; | |
331 | else if (baud <= 300) baud = 300; | |
332 | else if (baud <= 600) baud = 600; | |
333 | else if (baud <= 1200) baud = 1200; | |
334 | else if (baud <= 1800) baud = 1800; | |
335 | else if (baud <= 2400) baud = 2400; | |
336 | else if (baud <= 4000) baud = 4000; | |
337 | else if (baud <= 4803) baud = 4800; | |
338 | else if (baud <= 7207) baud = 7200; | |
339 | else if (baud <= 9612) baud = 9600; | |
340 | else if (baud <= 14428) baud = 14400; | |
341 | else if (baud <= 16062) baud = 16000; | |
342 | else if (baud <= 19250) baud = 19200; | |
343 | else if (baud <= 28912) baud = 28800; | |
344 | else if (baud <= 38601) baud = 38400; | |
345 | else if (baud <= 51558) baud = 51200; | |
346 | else if (baud <= 56280) baud = 56000; | |
347 | else if (baud <= 58053) baud = 57600; | |
348 | else if (baud <= 64111) baud = 64000; | |
349 | else if (baud <= 77608) baud = 76800; | |
350 | else if (baud <= 117028) baud = 115200; | |
351 | else if (baud <= 129347) baud = 128000; | |
352 | else if (baud <= 156868) baud = 153600; | |
353 | else if (baud <= 237832) baud = 230400; | |
354 | else if (baud <= 254234) baud = 250000; | |
355 | else if (baud <= 273066) baud = 256000; | |
356 | else if (baud <= 491520) baud = 460800; | |
357 | else if (baud <= 567138) baud = 500000; | |
358 | else if (baud <= 670254) baud = 576000; | |
359 | else if (baud <= 1053257) baud = 921600; | |
360 | else if (baud <= 1474560) baud = 1228800; | |
361 | else if (baud <= 2457600) baud = 1843200; | |
362 | else baud = 3686400; | |
363 | return baud; | |
364 | } | |
365 | ||
ff7eb602 | 366 | static int cp2101_open(struct tty_struct *tty, struct usb_serial_port *port, |
95da310e | 367 | struct file *filp) |
1da177e4 LT |
368 | { |
369 | struct usb_serial *serial = port->serial; | |
370 | int result; | |
371 | ||
441b62c1 | 372 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 373 | |
93ef1f1f | 374 | if (cp2101_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) { |
1da177e4 | 375 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
441b62c1 | 376 | __func__); |
1da177e4 LT |
377 | return -EPROTO; |
378 | } | |
379 | ||
380 | /* Start reading from the device */ | |
ff7eb602 | 381 | usb_fill_bulk_urb(port->read_urb, serial->dev, |
1da177e4 LT |
382 | usb_rcvbulkpipe(serial->dev, |
383 | port->bulk_in_endpointAddress), | |
384 | port->read_urb->transfer_buffer, | |
385 | port->read_urb->transfer_buffer_length, | |
386 | serial->type->read_bulk_callback, | |
387 | port); | |
388 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
389 | if (result) { | |
390 | dev_err(&port->dev, "%s - failed resubmitting read urb, " | |
441b62c1 | 391 | "error %d\n", __func__, result); |
1da177e4 LT |
392 | return result; |
393 | } | |
394 | ||
39a66b8d | 395 | /* Configure the termios structure */ |
d2ad67b3 | 396 | cp2101_get_termios(tty, port); |
1da177e4 | 397 | |
39a66b8d | 398 | /* Set the DTR and RTS pins low */ |
d2ad67b3 V |
399 | cp2101_tiocmset_port(tty ? (struct usb_serial_port *) tty->driver_data |
400 | : port, | |
401 | NULL, TIOCM_DTR | TIOCM_RTS, 0); | |
39a66b8d | 402 | |
1da177e4 LT |
403 | return 0; |
404 | } | |
405 | ||
ff7eb602 | 406 | static void cp2101_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 | ||
335f8514 | 421 | static void cp2101_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) | |
93ef1f1f | 432 | cp2101_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
95bef012 | 433 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
434 | } |
435 | ||
39a66b8d CS |
436 | /* |
437 | * cp2101_get_termios | |
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 | */ | |
d2ad67b3 V |
442 | static void cp2101_get_termios(struct tty_struct *tty, |
443 | struct usb_serial_port *port) | |
444 | { | |
445 | unsigned int baud; | |
446 | ||
447 | if (tty) { | |
448 | cp2101_get_termios_port(tty->driver_data, | |
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; | |
456 | cp2101_get_termios_port(port, &cflag, &baud); | |
457 | } | |
458 | } | |
459 | ||
460 | /* | |
461 | * cp2101_get_termios_port | |
462 | * This is the heart of cp2101_get_termios which always uses a &usb_serial_port. | |
463 | */ | |
464 | static void cp2101_get_termios_port(struct usb_serial_port *port, | |
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 | |
93ef1f1f | 473 | cp2101_get_config(port, CP210X_GET_BAUDDIV, &baud, 2); |
39a66b8d | 474 | /* Convert to baudrate */ |
1da177e4 | 475 | if (baud) |
ef8b6bcb | 476 | baud = cp2101_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 | |
93ef1f1f | 483 | cp2101_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; | |
93ef1f1f | 508 | cp2101_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; | |
93ef1f1f | 515 | cp2101_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; | |
93ef1f1f | 538 | cp2101_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; | |
93ef1f1f | 545 | cp2101_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; | |
93ef1f1f | 551 | cp2101_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; | |
93ef1f1f | 564 | cp2101_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; | |
93ef1f1f | 574 | cp2101_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 575 | break; |
1da177e4 LT |
576 | } |
577 | ||
93ef1f1f | 578 | cp2101_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 | ||
ff7eb602 | 590 | static void cp2101_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; |
ef8b6bcb | 605 | baud = cp2101_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); | |
93ef1f1f | 611 | if (cp2101_set_config_single(port, CP210X_SET_BAUDDIV, |
ef8b6bcb | 612 | ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) { |
97324955 | 613 | dbg("Baud rate requested not supported by device\n"); |
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)) { |
93ef1f1f | 622 | cp2101_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: | |
97324955 | 646 | dbg("cp2101 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 | } | |
93ef1f1f | 652 | if (cp2101_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))) { | |
93ef1f1f | 658 | cp2101_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 | } | |
93ef1f1f | 669 | if (cp2101_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)) { | |
93ef1f1f | 675 | cp2101_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 | } |
93ef1f1f | 684 | if (cp2101_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)) { | |
93ef1f1f | 690 | cp2101_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]); |
93ef1f1f | 710 | cp2101_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
711 | } |
712 | ||
713 | } | |
714 | ||
95da310e | 715 | static int cp2101_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; |
d2ad67b3 V |
719 | return cp2101_tiocmset_port(port, file, set, clear); |
720 | } | |
721 | ||
722 | static int cp2101_tiocmset_port(struct usb_serial_port *port, struct file *file, | |
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 | |
93ef1f1f | 748 | return cp2101_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
749 | } |
750 | ||
95da310e | 751 | static int cp2101_tiocmget (struct tty_struct *tty, struct file *file) |
39a66b8d | 752 | { |
95da310e | 753 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
754 | unsigned int control; |
755 | int result; | |
39a66b8d | 756 | |
441b62c1 | 757 | dbg("%s - port %d", __func__, port->number); |
39a66b8d | 758 | |
93ef1f1f | 759 | cp2101_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
760 | |
761 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
762 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
763 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
764 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
765 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
766 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
767 | ||
441b62c1 | 768 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
769 | |
770 | return result; | |
1da177e4 LT |
771 | } |
772 | ||
95da310e | 773 | static void cp2101_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 774 | { |
95da310e | 775 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 776 | unsigned int state; |
1da177e4 | 777 | |
441b62c1 | 778 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
779 | if (break_state == 0) |
780 | state = BREAK_OFF; | |
781 | else | |
782 | state = BREAK_ON; | |
441b62c1 | 783 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 784 | state == BREAK_OFF ? "off" : "on"); |
93ef1f1f | 785 | cp2101_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
786 | } |
787 | ||
ff7eb602 | 788 | static int cp2101_startup(struct usb_serial *serial) |
1da177e4 | 789 | { |
39a66b8d | 790 | /* CP2101 buffers behave strangely unless device is reset */ |
1da177e4 LT |
791 | usb_reset_device(serial->dev); |
792 | return 0; | |
793 | } | |
794 | ||
ff7eb602 | 795 | static void cp2101_shutdown(struct usb_serial *serial) |
1da177e4 LT |
796 | { |
797 | int i; | |
798 | ||
441b62c1 | 799 | dbg("%s", __func__); |
1da177e4 | 800 | |
39a66b8d | 801 | /* Stop reads and writes on all ports */ |
ff7eb602 | 802 | for (i = 0; i < serial->num_ports; ++i) |
1da177e4 | 803 | cp2101_cleanup(serial->port[i]); |
1da177e4 LT |
804 | } |
805 | ||
ff7eb602 | 806 | static int __init cp2101_init(void) |
1da177e4 LT |
807 | { |
808 | int retval; | |
809 | ||
810 | retval = usb_serial_register(&cp2101_device); | |
811 | if (retval) | |
39a66b8d | 812 | return retval; /* Failed to register */ |
1da177e4 LT |
813 | |
814 | retval = usb_register(&cp2101_driver); | |
815 | if (retval) { | |
39a66b8d | 816 | /* Failed to register */ |
1da177e4 LT |
817 | usb_serial_deregister(&cp2101_device); |
818 | return retval; | |
819 | } | |
820 | ||
39a66b8d | 821 | /* Success */ |
c197a8db GKH |
822 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
823 | DRIVER_DESC "\n"); | |
1da177e4 LT |
824 | return 0; |
825 | } | |
826 | ||
ff7eb602 | 827 | static void __exit cp2101_exit(void) |
1da177e4 | 828 | { |
ff7eb602 AC |
829 | usb_deregister(&cp2101_driver); |
830 | usb_serial_deregister(&cp2101_device); | |
1da177e4 LT |
831 | } |
832 | ||
833 | module_init(cp2101_init); | |
834 | module_exit(cp2101_exit); | |
835 | ||
836 | MODULE_DESCRIPTION(DRIVER_DESC); | |
837 | MODULE_VERSION(DRIVER_VERSION); | |
838 | MODULE_LICENSE("GPL"); | |
839 | ||
840 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
841 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |