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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 *); | |
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 */ |
1f4f714f | 60 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
198b9517 | 61 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 62 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 63 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
198b9517 | 64 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
65 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
66 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
5de8b3ac | 67 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 68 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
92f5cae2 | 69 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 70 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 71 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
e988fc8a CS |
72 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
73 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 74 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 75 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 76 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 77 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
fc4bd64c JH |
78 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
79 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
e988fc8a | 80 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
c6535668 | 81 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 82 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
59fba744 | 83 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
78001e3d BS |
84 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
85 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 86 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
78001e3d | 87 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 88 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
95bec45d | 89 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */ |
e8898681 | 90 | { USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */ |
ba0f332c | 91 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
881e3c98 | 92 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
d23bac9f | 93 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
e988fc8a | 94 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 95 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
5de8b3ac CS |
96 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
97 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
98 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
99 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 100 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
e05998d5 | 101 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
5de8b3ac | 102 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 103 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
ba0f332c | 104 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ |
39a66b8d | 105 | { } /* Terminating Entry */ |
1da177e4 LT |
106 | }; |
107 | ||
ff7eb602 | 108 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
109 | |
110 | static struct usb_driver cp2101_driver = { | |
269bda1c | 111 | .name = "cp2101", |
1da177e4 LT |
112 | .probe = usb_serial_probe, |
113 | .disconnect = usb_serial_disconnect, | |
114 | .id_table = id_table, | |
ba9dc657 | 115 | .no_dynamic_id = 1, |
1da177e4 LT |
116 | }; |
117 | ||
ea65370d | 118 | static struct usb_serial_driver cp2101_device = { |
18fcac35 GKH |
119 | .driver = { |
120 | .owner = THIS_MODULE, | |
269bda1c | 121 | .name = "cp2101", |
18fcac35 | 122 | }, |
d9b1b787 | 123 | .usb_driver = &cp2101_driver, |
1da177e4 | 124 | .id_table = id_table, |
1da177e4 LT |
125 | .num_ports = 1, |
126 | .open = cp2101_open, | |
127 | .close = cp2101_close, | |
128 | .break_ctl = cp2101_break_ctl, | |
129 | .set_termios = cp2101_set_termios, | |
39a66b8d CS |
130 | .tiocmget = cp2101_tiocmget, |
131 | .tiocmset = cp2101_tiocmset, | |
1da177e4 LT |
132 | .attach = cp2101_startup, |
133 | .shutdown = cp2101_shutdown, | |
134 | }; | |
135 | ||
39a66b8d | 136 | /* Config request types */ |
1da177e4 LT |
137 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
138 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
139 | ||
39a66b8d CS |
140 | /* Config SET requests. To GET, add 1 to the request number */ |
141 | #define CP2101_UART 0x00 /* Enable / Disable */ | |
142 | #define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */ | |
143 | #define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */ | |
144 | #define CP2101_BREAK 0x05 /* On / Off */ | |
145 | #define CP2101_CONTROL 0x07 /* Flow control line states */ | |
146 | #define CP2101_MODEMCTL 0x13 /* Modem controls */ | |
147 | #define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */ | |
1da177e4 | 148 | |
39a66b8d | 149 | /* CP2101_UART */ |
1da177e4 LT |
150 | #define UART_ENABLE 0x0001 |
151 | #define UART_DISABLE 0x0000 | |
152 | ||
39a66b8d | 153 | /* CP2101_BAUDRATE */ |
1da177e4 LT |
154 | #define BAUD_RATE_GEN_FREQ 0x384000 |
155 | ||
39a66b8d | 156 | /* CP2101_BITS */ |
1da177e4 | 157 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 158 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
159 | #define BITS_DATA_6 0X0600 |
160 | #define BITS_DATA_7 0X0700 | |
161 | #define BITS_DATA_8 0X0800 | |
162 | #define BITS_DATA_9 0X0900 | |
163 | ||
164 | #define BITS_PARITY_MASK 0x00f0 | |
165 | #define BITS_PARITY_NONE 0x0000 | |
166 | #define BITS_PARITY_ODD 0x0010 | |
167 | #define BITS_PARITY_EVEN 0x0020 | |
168 | #define BITS_PARITY_MARK 0x0030 | |
169 | #define BITS_PARITY_SPACE 0x0040 | |
170 | ||
171 | #define BITS_STOP_MASK 0x000f | |
172 | #define BITS_STOP_1 0x0000 | |
173 | #define BITS_STOP_1_5 0x0001 | |
174 | #define BITS_STOP_2 0x0002 | |
39a66b8d CS |
175 | |
176 | /* CP2101_BREAK */ | |
1da177e4 LT |
177 | #define BREAK_ON 0x0000 |
178 | #define BREAK_OFF 0x0001 | |
179 | ||
39a66b8d CS |
180 | /* CP2101_CONTROL */ |
181 | #define CONTROL_DTR 0x0001 | |
182 | #define CONTROL_RTS 0x0002 | |
183 | #define CONTROL_CTS 0x0010 | |
184 | #define CONTROL_DSR 0x0020 | |
185 | #define CONTROL_RING 0x0040 | |
186 | #define CONTROL_DCD 0x0080 | |
187 | #define CONTROL_WRITE_DTR 0x0100 | |
188 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 189 | |
39a66b8d CS |
190 | /* |
191 | * cp2101_get_config | |
192 | * Reads from the CP2101 configuration registers | |
193 | * 'size' is specified in bytes. | |
194 | * 'data' is a pointer to a pre-allocated array of integers large | |
195 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
196 | */ | |
95da310e | 197 | static int cp2101_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 198 | unsigned int *data, int size) |
1da177e4 LT |
199 | { |
200 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 201 | __le32 *buf; |
39a66b8d CS |
202 | int result, i, length; |
203 | ||
204 | /* Number of integers required to contain the array */ | |
205 | length = (((size - 1) | 3) + 1)/4; | |
206 | ||
53ebb3b8 | 207 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 208 | if (!buf) { |
441b62c1 | 209 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
210 | return -ENOMEM; |
211 | } | |
1da177e4 | 212 | |
39a66b8d | 213 | /* For get requests, the request number must be incremented */ |
1da177e4 LT |
214 | request++; |
215 | ||
39a66b8d | 216 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 217 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 218 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 219 | 0, buf, size, 300); |
1da177e4 | 220 | |
39a66b8d | 221 | /* Convert data into an array of integers */ |
ff7eb602 | 222 | for (i = 0; i < length; i++) |
39a66b8d | 223 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 224 | |
39a66b8d | 225 | kfree(buf); |
1da177e4 | 226 | |
39a66b8d | 227 | if (result != size) { |
97324955 | 228 | dbg("%s - Unable to send config request, " |
39a66b8d | 229 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 230 | __func__, request, size, result); |
39a66b8d CS |
231 | return -EPROTO; |
232 | } | |
1da177e4 | 233 | |
39a66b8d | 234 | return 0; |
1da177e4 LT |
235 | } |
236 | ||
39a66b8d CS |
237 | /* |
238 | * cp2101_set_config | |
239 | * Writes to the CP2101 configuration registers | |
240 | * Values less than 16 bits wide are sent directly | |
241 | * 'size' is specified in bytes. | |
242 | */ | |
95da310e | 243 | static int cp2101_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 244 | unsigned int *data, int size) |
1da177e4 LT |
245 | { |
246 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 247 | __le32 *buf; |
39a66b8d | 248 | int result, i, length; |
1da177e4 | 249 | |
39a66b8d CS |
250 | /* Number of integers required to contain the array */ |
251 | length = (((size - 1) | 3) + 1)/4; | |
252 | ||
53ebb3b8 | 253 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
254 | if (!buf) { |
255 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 256 | __func__); |
39a66b8d CS |
257 | return -ENOMEM; |
258 | } | |
259 | ||
260 | /* Array of integers into bytes */ | |
261 | for (i = 0; i < length; i++) | |
262 | buf[i] = cpu_to_le32(data[i]); | |
263 | ||
264 | if (size > 2) { | |
ff7eb602 | 265 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
266 | usb_sndctrlpipe(serial->dev, 0), |
267 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
268 | 0, buf, size, 300); | |
269 | } else { | |
ff7eb602 | 270 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
271 | usb_sndctrlpipe(serial->dev, 0), |
272 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
273 | 0, NULL, 0, 300); | |
1da177e4 LT |
274 | } |
275 | ||
39a66b8d CS |
276 | kfree(buf); |
277 | ||
278 | if ((size > 2 && result != size) || result < 0) { | |
97324955 | 279 | dbg("%s - Unable to send request, " |
39a66b8d | 280 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 281 | __func__, request, size, result); |
39a66b8d CS |
282 | return -EPROTO; |
283 | } | |
1da177e4 | 284 | |
39a66b8d | 285 | /* Single data value */ |
ff7eb602 | 286 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
287 | usb_sndctrlpipe(serial->dev, 0), |
288 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
289 | 0, NULL, 0, 300); | |
1da177e4 LT |
290 | return 0; |
291 | } | |
292 | ||
39a66b8d CS |
293 | /* |
294 | * cp2101_set_config_single | |
295 | * Convenience function for calling cp2101_set_config on single data values | |
296 | * without requiring an integer pointer | |
297 | */ | |
95da310e | 298 | static inline int cp2101_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
299 | u8 request, unsigned int data) |
300 | { | |
301 | return cp2101_set_config(port, request, &data, 2); | |
302 | } | |
303 | ||
ef8b6bcb CS |
304 | /* |
305 | * cp2101_quantise_baudrate | |
306 | * Quantises the baud rate as per AN205 Table 1 | |
307 | */ | |
308 | static unsigned int cp2101_quantise_baudrate(unsigned int baud) { | |
309 | if (baud <= 56) baud = 0; | |
310 | else if (baud <= 300) baud = 300; | |
311 | else if (baud <= 600) baud = 600; | |
312 | else if (baud <= 1200) baud = 1200; | |
313 | else if (baud <= 1800) baud = 1800; | |
314 | else if (baud <= 2400) baud = 2400; | |
315 | else if (baud <= 4000) baud = 4000; | |
316 | else if (baud <= 4803) baud = 4800; | |
317 | else if (baud <= 7207) baud = 7200; | |
318 | else if (baud <= 9612) baud = 9600; | |
319 | else if (baud <= 14428) baud = 14400; | |
320 | else if (baud <= 16062) baud = 16000; | |
321 | else if (baud <= 19250) baud = 19200; | |
322 | else if (baud <= 28912) baud = 28800; | |
323 | else if (baud <= 38601) baud = 38400; | |
324 | else if (baud <= 51558) baud = 51200; | |
325 | else if (baud <= 56280) baud = 56000; | |
326 | else if (baud <= 58053) baud = 57600; | |
327 | else if (baud <= 64111) baud = 64000; | |
328 | else if (baud <= 77608) baud = 76800; | |
329 | else if (baud <= 117028) baud = 115200; | |
330 | else if (baud <= 129347) baud = 128000; | |
331 | else if (baud <= 156868) baud = 153600; | |
332 | else if (baud <= 237832) baud = 230400; | |
333 | else if (baud <= 254234) baud = 250000; | |
334 | else if (baud <= 273066) baud = 256000; | |
335 | else if (baud <= 491520) baud = 460800; | |
336 | else if (baud <= 567138) baud = 500000; | |
337 | else if (baud <= 670254) baud = 576000; | |
338 | else if (baud <= 1053257) baud = 921600; | |
339 | else if (baud <= 1474560) baud = 1228800; | |
340 | else if (baud <= 2457600) baud = 1843200; | |
341 | else baud = 3686400; | |
342 | return baud; | |
343 | } | |
344 | ||
ff7eb602 | 345 | static int cp2101_open(struct tty_struct *tty, struct usb_serial_port *port, |
95da310e | 346 | struct file *filp) |
1da177e4 LT |
347 | { |
348 | struct usb_serial *serial = port->serial; | |
349 | int result; | |
350 | ||
441b62c1 | 351 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 352 | |
39a66b8d | 353 | if (cp2101_set_config_single(port, CP2101_UART, UART_ENABLE)) { |
1da177e4 | 354 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
441b62c1 | 355 | __func__); |
1da177e4 LT |
356 | return -EPROTO; |
357 | } | |
358 | ||
359 | /* Start reading from the device */ | |
ff7eb602 | 360 | usb_fill_bulk_urb(port->read_urb, serial->dev, |
1da177e4 LT |
361 | usb_rcvbulkpipe(serial->dev, |
362 | port->bulk_in_endpointAddress), | |
363 | port->read_urb->transfer_buffer, | |
364 | port->read_urb->transfer_buffer_length, | |
365 | serial->type->read_bulk_callback, | |
366 | port); | |
367 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
368 | if (result) { | |
369 | dev_err(&port->dev, "%s - failed resubmitting read urb, " | |
441b62c1 | 370 | "error %d\n", __func__, result); |
1da177e4 LT |
371 | return result; |
372 | } | |
373 | ||
39a66b8d | 374 | /* Configure the termios structure */ |
d2ad67b3 | 375 | cp2101_get_termios(tty, port); |
1da177e4 | 376 | |
39a66b8d | 377 | /* Set the DTR and RTS pins low */ |
d2ad67b3 V |
378 | cp2101_tiocmset_port(tty ? (struct usb_serial_port *) tty->driver_data |
379 | : port, | |
380 | NULL, TIOCM_DTR | TIOCM_RTS, 0); | |
39a66b8d | 381 | |
1da177e4 LT |
382 | return 0; |
383 | } | |
384 | ||
ff7eb602 | 385 | static void cp2101_cleanup(struct usb_serial_port *port) |
1da177e4 LT |
386 | { |
387 | struct usb_serial *serial = port->serial; | |
388 | ||
441b62c1 | 389 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
390 | |
391 | if (serial->dev) { | |
392 | /* shutdown any bulk reads that might be going on */ | |
393 | if (serial->num_bulk_out) | |
394 | usb_kill_urb(port->write_urb); | |
395 | if (serial->num_bulk_in) | |
396 | usb_kill_urb(port->read_urb); | |
397 | } | |
398 | } | |
399 | ||
335f8514 | 400 | static void cp2101_close(struct usb_serial_port *port) |
1da177e4 | 401 | { |
441b62c1 | 402 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
403 | |
404 | /* shutdown our urbs */ | |
441b62c1 | 405 | dbg("%s - shutting down urbs", __func__); |
1da177e4 LT |
406 | usb_kill_urb(port->write_urb); |
407 | usb_kill_urb(port->read_urb); | |
408 | ||
95bef012 ON |
409 | mutex_lock(&port->serial->disc_mutex); |
410 | if (!port->serial->disconnected) | |
411 | cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); | |
412 | mutex_unlock(&port->serial->disc_mutex); | |
1da177e4 LT |
413 | } |
414 | ||
39a66b8d CS |
415 | /* |
416 | * cp2101_get_termios | |
417 | * Reads the baud rate, data bits, parity, stop bits and flow control mode | |
418 | * from the device, corrects any unsupported values, and configures the | |
419 | * termios structure to reflect the state of the device | |
420 | */ | |
d2ad67b3 V |
421 | static void cp2101_get_termios(struct tty_struct *tty, |
422 | struct usb_serial_port *port) | |
423 | { | |
424 | unsigned int baud; | |
425 | ||
426 | if (tty) { | |
427 | cp2101_get_termios_port(tty->driver_data, | |
428 | &tty->termios->c_cflag, &baud); | |
429 | tty_encode_baud_rate(tty, baud, baud); | |
430 | } | |
431 | ||
432 | else { | |
433 | unsigned int cflag; | |
434 | cflag = 0; | |
435 | cp2101_get_termios_port(port, &cflag, &baud); | |
436 | } | |
437 | } | |
438 | ||
439 | /* | |
440 | * cp2101_get_termios_port | |
441 | * This is the heart of cp2101_get_termios which always uses a &usb_serial_port. | |
442 | */ | |
443 | static void cp2101_get_termios_port(struct usb_serial_port *port, | |
444 | unsigned int *cflagp, unsigned int *baudp) | |
1da177e4 | 445 | { |
39a66b8d | 446 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
447 | unsigned int baud; |
448 | unsigned int bits; | |
1da177e4 | 449 | |
441b62c1 | 450 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 451 | |
39a66b8d CS |
452 | cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2); |
453 | /* Convert to baudrate */ | |
1da177e4 | 454 | if (baud) |
ef8b6bcb | 455 | baud = cp2101_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud); |
1da177e4 | 456 | |
441b62c1 | 457 | dbg("%s - baud rate = %d", __func__, baud); |
d2ad67b3 | 458 | *baudp = baud; |
9ab0f202 | 459 | |
d2ad67b3 | 460 | cflag = *cflagp; |
1da177e4 | 461 | |
39a66b8d | 462 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 | 463 | cflag &= ~CSIZE; |
ff7eb602 AC |
464 | switch (bits & BITS_DATA_MASK) { |
465 | case BITS_DATA_5: | |
466 | dbg("%s - data bits = 5", __func__); | |
467 | cflag |= CS5; | |
468 | break; | |
469 | case BITS_DATA_6: | |
470 | dbg("%s - data bits = 6", __func__); | |
471 | cflag |= CS6; | |
472 | break; | |
473 | case BITS_DATA_7: | |
474 | dbg("%s - data bits = 7", __func__); | |
475 | cflag |= CS7; | |
476 | break; | |
477 | case BITS_DATA_8: | |
478 | dbg("%s - data bits = 8", __func__); | |
479 | cflag |= CS8; | |
480 | break; | |
481 | case BITS_DATA_9: | |
482 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
483 | __func__); | |
484 | cflag |= CS8; | |
485 | bits &= ~BITS_DATA_MASK; | |
486 | bits |= BITS_DATA_8; | |
487 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
488 | break; | |
489 | default: | |
490 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
491 | cflag |= CS8; | |
492 | bits &= ~BITS_DATA_MASK; | |
493 | bits |= BITS_DATA_8; | |
494 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
495 | break; | |
1da177e4 LT |
496 | } |
497 | ||
ff7eb602 AC |
498 | switch (bits & BITS_PARITY_MASK) { |
499 | case BITS_PARITY_NONE: | |
500 | dbg("%s - parity = NONE", __func__); | |
501 | cflag &= ~PARENB; | |
502 | break; | |
503 | case BITS_PARITY_ODD: | |
504 | dbg("%s - parity = ODD", __func__); | |
505 | cflag |= (PARENB|PARODD); | |
506 | break; | |
507 | case BITS_PARITY_EVEN: | |
508 | dbg("%s - parity = EVEN", __func__); | |
509 | cflag &= ~PARODD; | |
510 | cflag |= PARENB; | |
511 | break; | |
512 | case BITS_PARITY_MARK: | |
513 | dbg("%s - parity = MARK (not supported, disabling parity)", | |
514 | __func__); | |
515 | cflag &= ~PARENB; | |
516 | bits &= ~BITS_PARITY_MASK; | |
517 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
518 | break; | |
519 | case BITS_PARITY_SPACE: | |
520 | dbg("%s - parity = SPACE (not supported, disabling parity)", | |
521 | __func__); | |
522 | cflag &= ~PARENB; | |
523 | bits &= ~BITS_PARITY_MASK; | |
524 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
525 | break; | |
526 | default: | |
527 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
528 | cflag &= ~PARENB; | |
529 | bits &= ~BITS_PARITY_MASK; | |
530 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
531 | break; | |
1da177e4 LT |
532 | } |
533 | ||
534 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
535 | switch (bits & BITS_STOP_MASK) { |
536 | case BITS_STOP_1: | |
537 | dbg("%s - stop bits = 1", __func__); | |
538 | break; | |
539 | case BITS_STOP_1_5: | |
540 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
541 | __func__); | |
542 | bits &= ~BITS_STOP_MASK; | |
543 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
544 | break; | |
545 | case BITS_STOP_2: | |
546 | dbg("%s - stop bits = 2", __func__); | |
547 | cflag |= CSTOPB; | |
548 | break; | |
549 | default: | |
550 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
551 | __func__); | |
552 | bits &= ~BITS_STOP_MASK; | |
553 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
554 | break; | |
1da177e4 LT |
555 | } |
556 | ||
39a66b8d CS |
557 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); |
558 | if (modem_ctl[0] & 0x0008) { | |
441b62c1 | 559 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
560 | cflag |= CRTSCTS; |
561 | } else { | |
441b62c1 | 562 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
563 | cflag &= ~CRTSCTS; |
564 | } | |
565 | ||
d2ad67b3 | 566 | *cflagp = cflag; |
1da177e4 LT |
567 | } |
568 | ||
ff7eb602 | 569 | static void cp2101_set_termios(struct tty_struct *tty, |
95da310e | 570 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 571 | { |
9ab0f202 | 572 | unsigned int cflag, old_cflag; |
b2bdd1f5 | 573 | unsigned int baud = 0, bits; |
39a66b8d | 574 | unsigned int modem_ctl[4]; |
1da177e4 | 575 | |
441b62c1 | 576 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 577 | |
95da310e | 578 | if (!tty) |
1da177e4 | 579 | return; |
9ab0f202 | 580 | |
95da310e AC |
581 | tty->termios->c_cflag &= ~CMSPAR; |
582 | cflag = tty->termios->c_cflag; | |
01e96d28 | 583 | old_cflag = old_termios->c_cflag; |
ef8b6bcb | 584 | baud = cp2101_quantise_baudrate(tty_get_baud_rate(tty)); |
1da177e4 LT |
585 | |
586 | /* If the baud rate is to be updated*/ | |
ef8b6bcb CS |
587 | if (baud != tty_termios_baud_rate(old_termios) && baud != 0) { |
588 | dbg("%s - Setting baud rate to %d baud", __func__, | |
589 | baud); | |
590 | if (cp2101_set_config_single(port, CP2101_BAUDRATE, | |
591 | ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) { | |
97324955 | 592 | dbg("Baud rate requested not supported by device\n"); |
ef8b6bcb | 593 | baud = tty_termios_baud_rate(old_termios); |
1da177e4 LT |
594 | } |
595 | } | |
9ab0f202 | 596 | /* Report back the resulting baud rate */ |
95da310e | 597 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 | 598 | |
39a66b8d | 599 | /* If the number of data bits is to be updated */ |
1da177e4 | 600 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
39a66b8d | 601 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
602 | bits &= ~BITS_DATA_MASK; |
603 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
604 | case CS5: |
605 | bits |= BITS_DATA_5; | |
606 | dbg("%s - data bits = 5", __func__); | |
607 | break; | |
608 | case CS6: | |
609 | bits |= BITS_DATA_6; | |
610 | dbg("%s - data bits = 6", __func__); | |
611 | break; | |
612 | case CS7: | |
613 | bits |= BITS_DATA_7; | |
614 | dbg("%s - data bits = 7", __func__); | |
615 | break; | |
616 | case CS8: | |
617 | bits |= BITS_DATA_8; | |
618 | dbg("%s - data bits = 8", __func__); | |
619 | break; | |
620 | /*case CS9: | |
621 | bits |= BITS_DATA_9; | |
622 | dbg("%s - data bits = 9", __func__); | |
623 | break;*/ | |
624 | default: | |
97324955 | 625 | dbg("cp2101 driver does not " |
1da177e4 LT |
626 | "support the number of bits requested," |
627 | " using 8 bit mode\n"); | |
628 | bits |= BITS_DATA_8; | |
629 | break; | |
630 | } | |
39a66b8d | 631 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
97324955 | 632 | dbg("Number of data bits requested " |
1da177e4 LT |
633 | "not supported by device\n"); |
634 | } | |
635 | ||
636 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
39a66b8d | 637 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
638 | bits &= ~BITS_PARITY_MASK; |
639 | if (cflag & PARENB) { | |
640 | if (cflag & PARODD) { | |
641 | bits |= BITS_PARITY_ODD; | |
441b62c1 | 642 | dbg("%s - parity = ODD", __func__); |
1da177e4 LT |
643 | } else { |
644 | bits |= BITS_PARITY_EVEN; | |
441b62c1 | 645 | dbg("%s - parity = EVEN", __func__); |
1da177e4 LT |
646 | } |
647 | } | |
39a66b8d | 648 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
97324955 | 649 | dbg("Parity mode not supported " |
1da177e4 LT |
650 | "by device\n"); |
651 | } | |
652 | ||
653 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
39a66b8d | 654 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
655 | bits &= ~BITS_STOP_MASK; |
656 | if (cflag & CSTOPB) { | |
657 | bits |= BITS_STOP_2; | |
441b62c1 | 658 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
659 | } else { |
660 | bits |= BITS_STOP_1; | |
441b62c1 | 661 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 662 | } |
39a66b8d | 663 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
97324955 | 664 | dbg("Number of stop bits requested " |
1da177e4 LT |
665 | "not supported by device\n"); |
666 | } | |
39a66b8d CS |
667 | |
668 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
669 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
670 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 671 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
672 | modem_ctl[2], modem_ctl[3]); |
673 | ||
674 | if (cflag & CRTSCTS) { | |
675 | modem_ctl[0] &= ~0x7B; | |
676 | modem_ctl[0] |= 0x09; | |
677 | modem_ctl[1] = 0x80; | |
441b62c1 | 678 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
679 | } else { |
680 | modem_ctl[0] &= ~0x7B; | |
681 | modem_ctl[0] |= 0x01; | |
682 | modem_ctl[1] |= 0x40; | |
441b62c1 | 683 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
684 | } |
685 | ||
686 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 687 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
688 | modem_ctl[2], modem_ctl[3]); |
689 | cp2101_set_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
690 | } | |
691 | ||
692 | } | |
693 | ||
95da310e | 694 | static int cp2101_tiocmset (struct tty_struct *tty, struct file *file, |
39a66b8d CS |
695 | unsigned int set, unsigned int clear) |
696 | { | |
95da310e | 697 | struct usb_serial_port *port = tty->driver_data; |
d2ad67b3 V |
698 | return cp2101_tiocmset_port(port, file, set, clear); |
699 | } | |
700 | ||
701 | static int cp2101_tiocmset_port(struct usb_serial_port *port, struct file *file, | |
702 | unsigned int set, unsigned int clear) | |
703 | { | |
b2bdd1f5 | 704 | unsigned int control = 0; |
39a66b8d | 705 | |
441b62c1 | 706 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
707 | |
708 | if (set & TIOCM_RTS) { | |
709 | control |= CONTROL_RTS; | |
710 | control |= CONTROL_WRITE_RTS; | |
711 | } | |
712 | if (set & TIOCM_DTR) { | |
713 | control |= CONTROL_DTR; | |
714 | control |= CONTROL_WRITE_DTR; | |
715 | } | |
716 | if (clear & TIOCM_RTS) { | |
717 | control &= ~CONTROL_RTS; | |
718 | control |= CONTROL_WRITE_RTS; | |
719 | } | |
720 | if (clear & TIOCM_DTR) { | |
721 | control &= ~CONTROL_DTR; | |
722 | control |= CONTROL_WRITE_DTR; | |
723 | } | |
724 | ||
441b62c1 | 725 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d CS |
726 | |
727 | return cp2101_set_config(port, CP2101_CONTROL, &control, 2); | |
39a66b8d CS |
728 | } |
729 | ||
95da310e | 730 | static int cp2101_tiocmget (struct tty_struct *tty, struct file *file) |
39a66b8d | 731 | { |
95da310e | 732 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
733 | unsigned int control; |
734 | int result; | |
39a66b8d | 735 | |
441b62c1 | 736 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
737 | |
738 | cp2101_get_config(port, CP2101_CONTROL, &control, 1); | |
739 | ||
740 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
741 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
742 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
743 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
744 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
745 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
746 | ||
441b62c1 | 747 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
748 | |
749 | return result; | |
1da177e4 LT |
750 | } |
751 | ||
95da310e | 752 | static void cp2101_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 753 | { |
95da310e | 754 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 755 | unsigned int state; |
1da177e4 | 756 | |
441b62c1 | 757 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
758 | if (break_state == 0) |
759 | state = BREAK_OFF; | |
760 | else | |
761 | state = BREAK_ON; | |
441b62c1 | 762 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 763 | state == BREAK_OFF ? "off" : "on"); |
39a66b8d | 764 | cp2101_set_config(port, CP2101_BREAK, &state, 2); |
1da177e4 LT |
765 | } |
766 | ||
ff7eb602 | 767 | static int cp2101_startup(struct usb_serial *serial) |
1da177e4 | 768 | { |
39a66b8d | 769 | /* CP2101 buffers behave strangely unless device is reset */ |
1da177e4 LT |
770 | usb_reset_device(serial->dev); |
771 | return 0; | |
772 | } | |
773 | ||
ff7eb602 | 774 | static void cp2101_shutdown(struct usb_serial *serial) |
1da177e4 LT |
775 | { |
776 | int i; | |
777 | ||
441b62c1 | 778 | dbg("%s", __func__); |
1da177e4 | 779 | |
39a66b8d | 780 | /* Stop reads and writes on all ports */ |
ff7eb602 | 781 | for (i = 0; i < serial->num_ports; ++i) |
1da177e4 | 782 | cp2101_cleanup(serial->port[i]); |
1da177e4 LT |
783 | } |
784 | ||
ff7eb602 | 785 | static int __init cp2101_init(void) |
1da177e4 LT |
786 | { |
787 | int retval; | |
788 | ||
789 | retval = usb_serial_register(&cp2101_device); | |
790 | if (retval) | |
39a66b8d | 791 | return retval; /* Failed to register */ |
1da177e4 LT |
792 | |
793 | retval = usb_register(&cp2101_driver); | |
794 | if (retval) { | |
39a66b8d | 795 | /* Failed to register */ |
1da177e4 LT |
796 | usb_serial_deregister(&cp2101_device); |
797 | return retval; | |
798 | } | |
799 | ||
39a66b8d | 800 | /* Success */ |
c197a8db GKH |
801 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
802 | DRIVER_DESC "\n"); | |
1da177e4 LT |
803 | return 0; |
804 | } | |
805 | ||
ff7eb602 | 806 | static void __exit cp2101_exit(void) |
1da177e4 | 807 | { |
ff7eb602 AC |
808 | usb_deregister(&cp2101_driver); |
809 | usb_serial_deregister(&cp2101_device); | |
1da177e4 LT |
810 | } |
811 | ||
812 | module_init(cp2101_init); | |
813 | module_exit(cp2101_exit); | |
814 | ||
815 | MODULE_DESCRIPTION(DRIVER_DESC); | |
816 | MODULE_VERSION(DRIVER_VERSION); | |
817 | MODULE_LICENSE("GPL"); | |
818 | ||
819 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
820 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |