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Commit | Line | Data |
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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 | */ | |
ef8b6bcb | 30 | #define DRIVER_VERSION "v0.08" |
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 *); | |
39 | static void cp2101_close(struct tty_struct *, struct usb_serial_port *, | |
40 | struct file*); | |
41 | static void cp2101_get_termios(struct tty_struct *); | |
42 | static void cp2101_set_termios(struct tty_struct *, struct usb_serial_port *, | |
43 | struct ktermios*); | |
ff7eb602 AC |
44 | static int cp2101_tiocmget(struct tty_struct *, struct file *); |
45 | static int cp2101_tiocmset(struct tty_struct *, struct file *, | |
39a66b8d | 46 | unsigned int, unsigned int); |
95da310e | 47 | static void cp2101_break_ctl(struct tty_struct *, int); |
ff7eb602 AC |
48 | static int cp2101_startup(struct usb_serial *); |
49 | static void cp2101_shutdown(struct usb_serial *); | |
1da177e4 LT |
50 | |
51 | ||
52 | static int debug; | |
53 | ||
54 | static struct usb_device_id id_table [] = { | |
5091b587 | 55 | { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ |
59fba744 | 56 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
1f4f714f | 57 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
198b9517 | 58 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 59 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 60 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
198b9517 | 61 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
62 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
63 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
5de8b3ac | 64 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 65 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
92f5cae2 | 66 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 67 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 68 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
e988fc8a CS |
69 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
70 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 71 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 72 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 73 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 74 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
fc4bd64c JH |
75 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
76 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
e988fc8a | 77 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
c6535668 | 78 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 79 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
59fba744 | 80 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
78001e3d BS |
81 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
82 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 83 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
78001e3d | 84 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 85 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
95bec45d | 86 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */ |
e8898681 | 87 | { USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */ |
ba0f332c | 88 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
881e3c98 | 89 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
d23bac9f | 90 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
e988fc8a | 91 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 92 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
5de8b3ac CS |
93 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
94 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
95 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
96 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 97 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
e05998d5 | 98 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
5de8b3ac | 99 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 100 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
ba0f332c | 101 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ |
39a66b8d | 102 | { } /* Terminating Entry */ |
1da177e4 LT |
103 | }; |
104 | ||
ff7eb602 | 105 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
106 | |
107 | static struct usb_driver cp2101_driver = { | |
269bda1c | 108 | .name = "cp2101", |
1da177e4 LT |
109 | .probe = usb_serial_probe, |
110 | .disconnect = usb_serial_disconnect, | |
111 | .id_table = id_table, | |
ba9dc657 | 112 | .no_dynamic_id = 1, |
1da177e4 LT |
113 | }; |
114 | ||
ea65370d | 115 | static struct usb_serial_driver cp2101_device = { |
18fcac35 GKH |
116 | .driver = { |
117 | .owner = THIS_MODULE, | |
269bda1c | 118 | .name = "cp2101", |
18fcac35 | 119 | }, |
d9b1b787 | 120 | .usb_driver = &cp2101_driver, |
1da177e4 | 121 | .id_table = id_table, |
1da177e4 LT |
122 | .num_ports = 1, |
123 | .open = cp2101_open, | |
124 | .close = cp2101_close, | |
125 | .break_ctl = cp2101_break_ctl, | |
126 | .set_termios = cp2101_set_termios, | |
39a66b8d CS |
127 | .tiocmget = cp2101_tiocmget, |
128 | .tiocmset = cp2101_tiocmset, | |
1da177e4 LT |
129 | .attach = cp2101_startup, |
130 | .shutdown = cp2101_shutdown, | |
131 | }; | |
132 | ||
39a66b8d | 133 | /* Config request types */ |
1da177e4 LT |
134 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
135 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
136 | ||
39a66b8d CS |
137 | /* Config SET requests. To GET, add 1 to the request number */ |
138 | #define CP2101_UART 0x00 /* Enable / Disable */ | |
139 | #define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */ | |
140 | #define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */ | |
141 | #define CP2101_BREAK 0x05 /* On / Off */ | |
142 | #define CP2101_CONTROL 0x07 /* Flow control line states */ | |
143 | #define CP2101_MODEMCTL 0x13 /* Modem controls */ | |
144 | #define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */ | |
1da177e4 | 145 | |
39a66b8d | 146 | /* CP2101_UART */ |
1da177e4 LT |
147 | #define UART_ENABLE 0x0001 |
148 | #define UART_DISABLE 0x0000 | |
149 | ||
39a66b8d | 150 | /* CP2101_BAUDRATE */ |
1da177e4 LT |
151 | #define BAUD_RATE_GEN_FREQ 0x384000 |
152 | ||
39a66b8d | 153 | /* CP2101_BITS */ |
1da177e4 | 154 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 155 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
156 | #define BITS_DATA_6 0X0600 |
157 | #define BITS_DATA_7 0X0700 | |
158 | #define BITS_DATA_8 0X0800 | |
159 | #define BITS_DATA_9 0X0900 | |
160 | ||
161 | #define BITS_PARITY_MASK 0x00f0 | |
162 | #define BITS_PARITY_NONE 0x0000 | |
163 | #define BITS_PARITY_ODD 0x0010 | |
164 | #define BITS_PARITY_EVEN 0x0020 | |
165 | #define BITS_PARITY_MARK 0x0030 | |
166 | #define BITS_PARITY_SPACE 0x0040 | |
167 | ||
168 | #define BITS_STOP_MASK 0x000f | |
169 | #define BITS_STOP_1 0x0000 | |
170 | #define BITS_STOP_1_5 0x0001 | |
171 | #define BITS_STOP_2 0x0002 | |
39a66b8d CS |
172 | |
173 | /* CP2101_BREAK */ | |
1da177e4 LT |
174 | #define BREAK_ON 0x0000 |
175 | #define BREAK_OFF 0x0001 | |
176 | ||
39a66b8d CS |
177 | /* CP2101_CONTROL */ |
178 | #define CONTROL_DTR 0x0001 | |
179 | #define CONTROL_RTS 0x0002 | |
180 | #define CONTROL_CTS 0x0010 | |
181 | #define CONTROL_DSR 0x0020 | |
182 | #define CONTROL_RING 0x0040 | |
183 | #define CONTROL_DCD 0x0080 | |
184 | #define CONTROL_WRITE_DTR 0x0100 | |
185 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 186 | |
39a66b8d CS |
187 | /* |
188 | * cp2101_get_config | |
189 | * Reads from the CP2101 configuration registers | |
190 | * 'size' is specified in bytes. | |
191 | * 'data' is a pointer to a pre-allocated array of integers large | |
192 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
193 | */ | |
95da310e | 194 | static int cp2101_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 195 | unsigned int *data, int size) |
1da177e4 LT |
196 | { |
197 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 198 | __le32 *buf; |
39a66b8d CS |
199 | int result, i, length; |
200 | ||
201 | /* Number of integers required to contain the array */ | |
202 | length = (((size - 1) | 3) + 1)/4; | |
203 | ||
53ebb3b8 | 204 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 205 | if (!buf) { |
441b62c1 | 206 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
207 | return -ENOMEM; |
208 | } | |
1da177e4 | 209 | |
39a66b8d | 210 | /* For get requests, the request number must be incremented */ |
1da177e4 LT |
211 | request++; |
212 | ||
39a66b8d | 213 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 214 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 215 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 216 | 0, buf, size, 300); |
1da177e4 | 217 | |
39a66b8d | 218 | /* Convert data into an array of integers */ |
ff7eb602 | 219 | for (i = 0; i < length; i++) |
39a66b8d | 220 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 221 | |
39a66b8d | 222 | kfree(buf); |
1da177e4 | 223 | |
39a66b8d | 224 | if (result != size) { |
97324955 | 225 | dbg("%s - Unable to send config request, " |
39a66b8d | 226 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 227 | __func__, request, size, result); |
39a66b8d CS |
228 | return -EPROTO; |
229 | } | |
1da177e4 | 230 | |
39a66b8d | 231 | return 0; |
1da177e4 LT |
232 | } |
233 | ||
39a66b8d CS |
234 | /* |
235 | * cp2101_set_config | |
236 | * Writes to the CP2101 configuration registers | |
237 | * Values less than 16 bits wide are sent directly | |
238 | * 'size' is specified in bytes. | |
239 | */ | |
95da310e | 240 | static int cp2101_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 241 | unsigned int *data, int size) |
1da177e4 LT |
242 | { |
243 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 244 | __le32 *buf; |
39a66b8d | 245 | int result, i, length; |
1da177e4 | 246 | |
39a66b8d CS |
247 | /* Number of integers required to contain the array */ |
248 | length = (((size - 1) | 3) + 1)/4; | |
249 | ||
53ebb3b8 | 250 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
251 | if (!buf) { |
252 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 253 | __func__); |
39a66b8d CS |
254 | return -ENOMEM; |
255 | } | |
256 | ||
257 | /* Array of integers into bytes */ | |
258 | for (i = 0; i < length; i++) | |
259 | buf[i] = cpu_to_le32(data[i]); | |
260 | ||
261 | if (size > 2) { | |
ff7eb602 | 262 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
263 | usb_sndctrlpipe(serial->dev, 0), |
264 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
265 | 0, buf, size, 300); | |
266 | } else { | |
ff7eb602 | 267 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
268 | usb_sndctrlpipe(serial->dev, 0), |
269 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
270 | 0, NULL, 0, 300); | |
1da177e4 LT |
271 | } |
272 | ||
39a66b8d CS |
273 | kfree(buf); |
274 | ||
275 | if ((size > 2 && result != size) || result < 0) { | |
97324955 | 276 | dbg("%s - Unable to send request, " |
39a66b8d | 277 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 278 | __func__, request, size, result); |
39a66b8d CS |
279 | return -EPROTO; |
280 | } | |
1da177e4 | 281 | |
39a66b8d | 282 | /* Single data value */ |
ff7eb602 | 283 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
284 | usb_sndctrlpipe(serial->dev, 0), |
285 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
286 | 0, NULL, 0, 300); | |
1da177e4 LT |
287 | return 0; |
288 | } | |
289 | ||
39a66b8d CS |
290 | /* |
291 | * cp2101_set_config_single | |
292 | * Convenience function for calling cp2101_set_config on single data values | |
293 | * without requiring an integer pointer | |
294 | */ | |
95da310e | 295 | static inline int cp2101_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
296 | u8 request, unsigned int data) |
297 | { | |
298 | return cp2101_set_config(port, request, &data, 2); | |
299 | } | |
300 | ||
ef8b6bcb CS |
301 | /* |
302 | * cp2101_quantise_baudrate | |
303 | * Quantises the baud rate as per AN205 Table 1 | |
304 | */ | |
305 | static unsigned int cp2101_quantise_baudrate(unsigned int baud) { | |
306 | if (baud <= 56) baud = 0; | |
307 | else if (baud <= 300) baud = 300; | |
308 | else if (baud <= 600) baud = 600; | |
309 | else if (baud <= 1200) baud = 1200; | |
310 | else if (baud <= 1800) baud = 1800; | |
311 | else if (baud <= 2400) baud = 2400; | |
312 | else if (baud <= 4000) baud = 4000; | |
313 | else if (baud <= 4803) baud = 4800; | |
314 | else if (baud <= 7207) baud = 7200; | |
315 | else if (baud <= 9612) baud = 9600; | |
316 | else if (baud <= 14428) baud = 14400; | |
317 | else if (baud <= 16062) baud = 16000; | |
318 | else if (baud <= 19250) baud = 19200; | |
319 | else if (baud <= 28912) baud = 28800; | |
320 | else if (baud <= 38601) baud = 38400; | |
321 | else if (baud <= 51558) baud = 51200; | |
322 | else if (baud <= 56280) baud = 56000; | |
323 | else if (baud <= 58053) baud = 57600; | |
324 | else if (baud <= 64111) baud = 64000; | |
325 | else if (baud <= 77608) baud = 76800; | |
326 | else if (baud <= 117028) baud = 115200; | |
327 | else if (baud <= 129347) baud = 128000; | |
328 | else if (baud <= 156868) baud = 153600; | |
329 | else if (baud <= 237832) baud = 230400; | |
330 | else if (baud <= 254234) baud = 250000; | |
331 | else if (baud <= 273066) baud = 256000; | |
332 | else if (baud <= 491520) baud = 460800; | |
333 | else if (baud <= 567138) baud = 500000; | |
334 | else if (baud <= 670254) baud = 576000; | |
335 | else if (baud <= 1053257) baud = 921600; | |
336 | else if (baud <= 1474560) baud = 1228800; | |
337 | else if (baud <= 2457600) baud = 1843200; | |
338 | else baud = 3686400; | |
339 | return baud; | |
340 | } | |
341 | ||
ff7eb602 | 342 | static int cp2101_open(struct tty_struct *tty, struct usb_serial_port *port, |
95da310e | 343 | struct file *filp) |
1da177e4 LT |
344 | { |
345 | struct usb_serial *serial = port->serial; | |
346 | int result; | |
347 | ||
441b62c1 | 348 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 349 | |
39a66b8d | 350 | if (cp2101_set_config_single(port, CP2101_UART, UART_ENABLE)) { |
1da177e4 | 351 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
441b62c1 | 352 | __func__); |
1da177e4 LT |
353 | return -EPROTO; |
354 | } | |
355 | ||
356 | /* Start reading from the device */ | |
ff7eb602 | 357 | usb_fill_bulk_urb(port->read_urb, serial->dev, |
1da177e4 LT |
358 | usb_rcvbulkpipe(serial->dev, |
359 | port->bulk_in_endpointAddress), | |
360 | port->read_urb->transfer_buffer, | |
361 | port->read_urb->transfer_buffer_length, | |
362 | serial->type->read_bulk_callback, | |
363 | port); | |
364 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
365 | if (result) { | |
366 | dev_err(&port->dev, "%s - failed resubmitting read urb, " | |
441b62c1 | 367 | "error %d\n", __func__, result); |
1da177e4 LT |
368 | return result; |
369 | } | |
370 | ||
39a66b8d | 371 | /* Configure the termios structure */ |
95da310e | 372 | cp2101_get_termios(tty); |
1da177e4 | 373 | |
39a66b8d | 374 | /* Set the DTR and RTS pins low */ |
95da310e | 375 | cp2101_tiocmset(tty, NULL, TIOCM_DTR | TIOCM_RTS, 0); |
39a66b8d | 376 | |
1da177e4 LT |
377 | return 0; |
378 | } | |
379 | ||
ff7eb602 | 380 | static void cp2101_cleanup(struct usb_serial_port *port) |
1da177e4 LT |
381 | { |
382 | struct usb_serial *serial = port->serial; | |
383 | ||
441b62c1 | 384 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
385 | |
386 | if (serial->dev) { | |
387 | /* shutdown any bulk reads that might be going on */ | |
388 | if (serial->num_bulk_out) | |
389 | usb_kill_urb(port->write_urb); | |
390 | if (serial->num_bulk_in) | |
391 | usb_kill_urb(port->read_urb); | |
392 | } | |
393 | } | |
394 | ||
95da310e | 395 | static void cp2101_close(struct tty_struct *tty, struct usb_serial_port *port, |
ff7eb602 | 396 | struct file *filp) |
1da177e4 | 397 | { |
441b62c1 | 398 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
399 | |
400 | /* shutdown our urbs */ | |
441b62c1 | 401 | dbg("%s - shutting down urbs", __func__); |
1da177e4 LT |
402 | usb_kill_urb(port->write_urb); |
403 | usb_kill_urb(port->read_urb); | |
404 | ||
95bef012 ON |
405 | mutex_lock(&port->serial->disc_mutex); |
406 | if (!port->serial->disconnected) | |
407 | cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); | |
408 | mutex_unlock(&port->serial->disc_mutex); | |
1da177e4 LT |
409 | } |
410 | ||
39a66b8d CS |
411 | /* |
412 | * cp2101_get_termios | |
413 | * Reads the baud rate, data bits, parity, stop bits and flow control mode | |
414 | * from the device, corrects any unsupported values, and configures the | |
415 | * termios structure to reflect the state of the device | |
416 | */ | |
95da310e | 417 | static void cp2101_get_termios (struct tty_struct *tty) |
1da177e4 | 418 | { |
95da310e | 419 | struct usb_serial_port *port = tty->driver_data; |
39a66b8d | 420 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
421 | unsigned int baud; |
422 | unsigned int bits; | |
1da177e4 | 423 | |
441b62c1 | 424 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 425 | |
39a66b8d CS |
426 | cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2); |
427 | /* Convert to baudrate */ | |
1da177e4 | 428 | if (baud) |
ef8b6bcb | 429 | baud = cp2101_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud); |
1da177e4 | 430 | |
441b62c1 | 431 | dbg("%s - baud rate = %d", __func__, baud); |
9ab0f202 | 432 | |
95da310e AC |
433 | tty_encode_baud_rate(tty, baud, baud); |
434 | cflag = tty->termios->c_cflag; | |
1da177e4 | 435 | |
39a66b8d | 436 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 | 437 | cflag &= ~CSIZE; |
ff7eb602 AC |
438 | switch (bits & BITS_DATA_MASK) { |
439 | case BITS_DATA_5: | |
440 | dbg("%s - data bits = 5", __func__); | |
441 | cflag |= CS5; | |
442 | break; | |
443 | case BITS_DATA_6: | |
444 | dbg("%s - data bits = 6", __func__); | |
445 | cflag |= CS6; | |
446 | break; | |
447 | case BITS_DATA_7: | |
448 | dbg("%s - data bits = 7", __func__); | |
449 | cflag |= CS7; | |
450 | break; | |
451 | case BITS_DATA_8: | |
452 | dbg("%s - data bits = 8", __func__); | |
453 | cflag |= CS8; | |
454 | break; | |
455 | case BITS_DATA_9: | |
456 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
457 | __func__); | |
458 | cflag |= CS8; | |
459 | bits &= ~BITS_DATA_MASK; | |
460 | bits |= BITS_DATA_8; | |
461 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
462 | break; | |
463 | default: | |
464 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
465 | cflag |= CS8; | |
466 | bits &= ~BITS_DATA_MASK; | |
467 | bits |= BITS_DATA_8; | |
468 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
469 | break; | |
1da177e4 LT |
470 | } |
471 | ||
ff7eb602 AC |
472 | switch (bits & BITS_PARITY_MASK) { |
473 | case BITS_PARITY_NONE: | |
474 | dbg("%s - parity = NONE", __func__); | |
475 | cflag &= ~PARENB; | |
476 | break; | |
477 | case BITS_PARITY_ODD: | |
478 | dbg("%s - parity = ODD", __func__); | |
479 | cflag |= (PARENB|PARODD); | |
480 | break; | |
481 | case BITS_PARITY_EVEN: | |
482 | dbg("%s - parity = EVEN", __func__); | |
483 | cflag &= ~PARODD; | |
484 | cflag |= PARENB; | |
485 | break; | |
486 | case BITS_PARITY_MARK: | |
487 | dbg("%s - parity = MARK (not supported, disabling parity)", | |
488 | __func__); | |
489 | cflag &= ~PARENB; | |
490 | bits &= ~BITS_PARITY_MASK; | |
491 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
492 | break; | |
493 | case BITS_PARITY_SPACE: | |
494 | dbg("%s - parity = SPACE (not supported, disabling parity)", | |
495 | __func__); | |
496 | cflag &= ~PARENB; | |
497 | bits &= ~BITS_PARITY_MASK; | |
498 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
499 | break; | |
500 | default: | |
501 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
502 | cflag &= ~PARENB; | |
503 | bits &= ~BITS_PARITY_MASK; | |
504 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
505 | break; | |
1da177e4 LT |
506 | } |
507 | ||
508 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
509 | switch (bits & BITS_STOP_MASK) { |
510 | case BITS_STOP_1: | |
511 | dbg("%s - stop bits = 1", __func__); | |
512 | break; | |
513 | case BITS_STOP_1_5: | |
514 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
515 | __func__); | |
516 | bits &= ~BITS_STOP_MASK; | |
517 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
518 | break; | |
519 | case BITS_STOP_2: | |
520 | dbg("%s - stop bits = 2", __func__); | |
521 | cflag |= CSTOPB; | |
522 | break; | |
523 | default: | |
524 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
525 | __func__); | |
526 | bits &= ~BITS_STOP_MASK; | |
527 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
528 | break; | |
1da177e4 LT |
529 | } |
530 | ||
39a66b8d CS |
531 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); |
532 | if (modem_ctl[0] & 0x0008) { | |
441b62c1 | 533 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
534 | cflag |= CRTSCTS; |
535 | } else { | |
441b62c1 | 536 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
537 | cflag &= ~CRTSCTS; |
538 | } | |
539 | ||
95da310e | 540 | tty->termios->c_cflag = cflag; |
1da177e4 LT |
541 | } |
542 | ||
ff7eb602 | 543 | static void cp2101_set_termios(struct tty_struct *tty, |
95da310e | 544 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 545 | { |
9ab0f202 | 546 | unsigned int cflag, old_cflag; |
b2bdd1f5 | 547 | unsigned int baud = 0, bits; |
39a66b8d | 548 | unsigned int modem_ctl[4]; |
1da177e4 | 549 | |
441b62c1 | 550 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 551 | |
95da310e | 552 | if (!tty) |
1da177e4 | 553 | return; |
9ab0f202 | 554 | |
95da310e AC |
555 | tty->termios->c_cflag &= ~CMSPAR; |
556 | cflag = tty->termios->c_cflag; | |
01e96d28 | 557 | old_cflag = old_termios->c_cflag; |
ef8b6bcb | 558 | baud = cp2101_quantise_baudrate(tty_get_baud_rate(tty)); |
1da177e4 LT |
559 | |
560 | /* If the baud rate is to be updated*/ | |
ef8b6bcb CS |
561 | if (baud != tty_termios_baud_rate(old_termios) && baud != 0) { |
562 | dbg("%s - Setting baud rate to %d baud", __func__, | |
563 | baud); | |
564 | if (cp2101_set_config_single(port, CP2101_BAUDRATE, | |
565 | ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) { | |
97324955 | 566 | dbg("Baud rate requested not supported by device\n"); |
ef8b6bcb | 567 | baud = tty_termios_baud_rate(old_termios); |
1da177e4 LT |
568 | } |
569 | } | |
9ab0f202 | 570 | /* Report back the resulting baud rate */ |
95da310e | 571 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 | 572 | |
39a66b8d | 573 | /* If the number of data bits is to be updated */ |
1da177e4 | 574 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
39a66b8d | 575 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
576 | bits &= ~BITS_DATA_MASK; |
577 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
578 | case CS5: |
579 | bits |= BITS_DATA_5; | |
580 | dbg("%s - data bits = 5", __func__); | |
581 | break; | |
582 | case CS6: | |
583 | bits |= BITS_DATA_6; | |
584 | dbg("%s - data bits = 6", __func__); | |
585 | break; | |
586 | case CS7: | |
587 | bits |= BITS_DATA_7; | |
588 | dbg("%s - data bits = 7", __func__); | |
589 | break; | |
590 | case CS8: | |
591 | bits |= BITS_DATA_8; | |
592 | dbg("%s - data bits = 8", __func__); | |
593 | break; | |
594 | /*case CS9: | |
595 | bits |= BITS_DATA_9; | |
596 | dbg("%s - data bits = 9", __func__); | |
597 | break;*/ | |
598 | default: | |
97324955 | 599 | dbg("cp2101 driver does not " |
1da177e4 LT |
600 | "support the number of bits requested," |
601 | " using 8 bit mode\n"); | |
602 | bits |= BITS_DATA_8; | |
603 | break; | |
604 | } | |
39a66b8d | 605 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
97324955 | 606 | dbg("Number of data bits requested " |
1da177e4 LT |
607 | "not supported by device\n"); |
608 | } | |
609 | ||
610 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
39a66b8d | 611 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
612 | bits &= ~BITS_PARITY_MASK; |
613 | if (cflag & PARENB) { | |
614 | if (cflag & PARODD) { | |
615 | bits |= BITS_PARITY_ODD; | |
441b62c1 | 616 | dbg("%s - parity = ODD", __func__); |
1da177e4 LT |
617 | } else { |
618 | bits |= BITS_PARITY_EVEN; | |
441b62c1 | 619 | dbg("%s - parity = EVEN", __func__); |
1da177e4 LT |
620 | } |
621 | } | |
39a66b8d | 622 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
97324955 | 623 | dbg("Parity mode not supported " |
1da177e4 LT |
624 | "by device\n"); |
625 | } | |
626 | ||
627 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
39a66b8d | 628 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
629 | bits &= ~BITS_STOP_MASK; |
630 | if (cflag & CSTOPB) { | |
631 | bits |= BITS_STOP_2; | |
441b62c1 | 632 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
633 | } else { |
634 | bits |= BITS_STOP_1; | |
441b62c1 | 635 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 636 | } |
39a66b8d | 637 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
97324955 | 638 | dbg("Number of stop bits requested " |
1da177e4 LT |
639 | "not supported by device\n"); |
640 | } | |
39a66b8d CS |
641 | |
642 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
643 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
644 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 645 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
646 | modem_ctl[2], modem_ctl[3]); |
647 | ||
648 | if (cflag & CRTSCTS) { | |
649 | modem_ctl[0] &= ~0x7B; | |
650 | modem_ctl[0] |= 0x09; | |
651 | modem_ctl[1] = 0x80; | |
441b62c1 | 652 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
653 | } else { |
654 | modem_ctl[0] &= ~0x7B; | |
655 | modem_ctl[0] |= 0x01; | |
656 | modem_ctl[1] |= 0x40; | |
441b62c1 | 657 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
658 | } |
659 | ||
660 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 661 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
662 | modem_ctl[2], modem_ctl[3]); |
663 | cp2101_set_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
664 | } | |
665 | ||
666 | } | |
667 | ||
95da310e | 668 | static int cp2101_tiocmset (struct tty_struct *tty, struct file *file, |
39a66b8d CS |
669 | unsigned int set, unsigned int clear) |
670 | { | |
95da310e | 671 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 672 | unsigned int control = 0; |
39a66b8d | 673 | |
441b62c1 | 674 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
675 | |
676 | if (set & TIOCM_RTS) { | |
677 | control |= CONTROL_RTS; | |
678 | control |= CONTROL_WRITE_RTS; | |
679 | } | |
680 | if (set & TIOCM_DTR) { | |
681 | control |= CONTROL_DTR; | |
682 | control |= CONTROL_WRITE_DTR; | |
683 | } | |
684 | if (clear & TIOCM_RTS) { | |
685 | control &= ~CONTROL_RTS; | |
686 | control |= CONTROL_WRITE_RTS; | |
687 | } | |
688 | if (clear & TIOCM_DTR) { | |
689 | control &= ~CONTROL_DTR; | |
690 | control |= CONTROL_WRITE_DTR; | |
691 | } | |
692 | ||
441b62c1 | 693 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d CS |
694 | |
695 | return cp2101_set_config(port, CP2101_CONTROL, &control, 2); | |
696 | ||
697 | } | |
698 | ||
95da310e | 699 | static int cp2101_tiocmget (struct tty_struct *tty, struct file *file) |
39a66b8d | 700 | { |
95da310e | 701 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
702 | unsigned int control; |
703 | int result; | |
39a66b8d | 704 | |
441b62c1 | 705 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
706 | |
707 | cp2101_get_config(port, CP2101_CONTROL, &control, 1); | |
708 | ||
709 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
710 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
711 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
712 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
713 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
714 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
715 | ||
441b62c1 | 716 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
717 | |
718 | return result; | |
1da177e4 LT |
719 | } |
720 | ||
95da310e | 721 | static void cp2101_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 722 | { |
95da310e | 723 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 724 | unsigned int state; |
1da177e4 | 725 | |
441b62c1 | 726 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
727 | if (break_state == 0) |
728 | state = BREAK_OFF; | |
729 | else | |
730 | state = BREAK_ON; | |
441b62c1 | 731 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 732 | state == BREAK_OFF ? "off" : "on"); |
39a66b8d | 733 | cp2101_set_config(port, CP2101_BREAK, &state, 2); |
1da177e4 LT |
734 | } |
735 | ||
ff7eb602 | 736 | static int cp2101_startup(struct usb_serial *serial) |
1da177e4 | 737 | { |
39a66b8d | 738 | /* CP2101 buffers behave strangely unless device is reset */ |
1da177e4 LT |
739 | usb_reset_device(serial->dev); |
740 | return 0; | |
741 | } | |
742 | ||
ff7eb602 | 743 | static void cp2101_shutdown(struct usb_serial *serial) |
1da177e4 LT |
744 | { |
745 | int i; | |
746 | ||
441b62c1 | 747 | dbg("%s", __func__); |
1da177e4 | 748 | |
39a66b8d | 749 | /* Stop reads and writes on all ports */ |
ff7eb602 | 750 | for (i = 0; i < serial->num_ports; ++i) |
1da177e4 | 751 | cp2101_cleanup(serial->port[i]); |
1da177e4 LT |
752 | } |
753 | ||
ff7eb602 | 754 | static int __init cp2101_init(void) |
1da177e4 LT |
755 | { |
756 | int retval; | |
757 | ||
758 | retval = usb_serial_register(&cp2101_device); | |
759 | if (retval) | |
39a66b8d | 760 | return retval; /* Failed to register */ |
1da177e4 LT |
761 | |
762 | retval = usb_register(&cp2101_driver); | |
763 | if (retval) { | |
39a66b8d | 764 | /* Failed to register */ |
1da177e4 LT |
765 | usb_serial_deregister(&cp2101_device); |
766 | return retval; | |
767 | } | |
768 | ||
39a66b8d | 769 | /* Success */ |
c197a8db GKH |
770 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
771 | DRIVER_DESC "\n"); | |
1da177e4 LT |
772 | return 0; |
773 | } | |
774 | ||
ff7eb602 | 775 | static void __exit cp2101_exit(void) |
1da177e4 | 776 | { |
ff7eb602 AC |
777 | usb_deregister(&cp2101_driver); |
778 | usb_serial_deregister(&cp2101_device); | |
1da177e4 LT |
779 | } |
780 | ||
781 | module_init(cp2101_init); | |
782 | module_exit(cp2101_exit); | |
783 | ||
784 | MODULE_DESCRIPTION(DRIVER_DESC); | |
785 | MODULE_VERSION(DRIVER_VERSION); | |
786 | MODULE_LICENSE("GPL"); | |
787 | ||
788 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
789 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |