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 | * | |
14 | * Outstanding Issues: | |
15 | * Buffers are not flushed when the port is opened. | |
16 | * Multiple calls to write() may fail with "Resource temporarily unavailable" | |
17 | * | |
1da177e4 LT |
18 | */ |
19 | ||
1da177e4 LT |
20 | #include <linux/kernel.h> |
21 | #include <linux/errno.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/tty.h> | |
24 | #include <linux/tty_flip.h> | |
25 | #include <linux/module.h> | |
26 | #include <linux/moduleparam.h> | |
27 | #include <linux/usb.h> | |
28 | #include <asm/uaccess.h> | |
a969888c | 29 | #include <linux/usb/serial.h> |
1da177e4 LT |
30 | |
31 | /* | |
32 | * Version Information | |
33 | */ | |
59224f53 | 34 | #define DRIVER_VERSION "v0.07" |
1da177e4 LT |
35 | #define DRIVER_DESC "Silicon Labs CP2101/CP2102 RS232 serial adaptor driver" |
36 | ||
37 | /* | |
38 | * Function Prototypes | |
39 | */ | |
40 | static int cp2101_open(struct usb_serial_port*, struct file*); | |
41 | static void cp2101_cleanup(struct usb_serial_port*); | |
42 | static void cp2101_close(struct usb_serial_port*, struct file*); | |
43 | static void cp2101_get_termios(struct usb_serial_port*); | |
606d099c | 44 | static void cp2101_set_termios(struct usb_serial_port*, struct ktermios*); |
39a66b8d CS |
45 | static int cp2101_tiocmget (struct usb_serial_port *, struct file *); |
46 | static int cp2101_tiocmset (struct usb_serial_port *, struct file *, | |
47 | unsigned int, unsigned int); | |
1da177e4 LT |
48 | static void cp2101_break_ctl(struct usb_serial_port*, int); |
49 | static int cp2101_startup (struct usb_serial *); | |
50 | static void cp2101_shutdown(struct usb_serial*); | |
51 | ||
52 | ||
53 | static int debug; | |
54 | ||
55 | static struct usb_device_id id_table [] = { | |
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 */ |
212a4b4e | 67 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
e988fc8a CS |
68 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
69 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 70 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a CS |
71 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
72 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ | |
fc4bd64c JH |
73 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
74 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
e988fc8a | 75 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
96623697 | 76 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
59fba744 | 77 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
78001e3d BS |
78 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
79 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 80 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
78001e3d | 81 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
e8898681 | 82 | { USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */ |
e988fc8a | 83 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 84 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
5de8b3ac CS |
85 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
86 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
87 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
88 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 89 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
e05998d5 | 90 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
5de8b3ac | 91 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 92 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
39a66b8d | 93 | { } /* Terminating Entry */ |
1da177e4 LT |
94 | }; |
95 | ||
96 | MODULE_DEVICE_TABLE (usb, id_table); | |
97 | ||
98 | static struct usb_driver cp2101_driver = { | |
269bda1c | 99 | .name = "cp2101", |
1da177e4 LT |
100 | .probe = usb_serial_probe, |
101 | .disconnect = usb_serial_disconnect, | |
102 | .id_table = id_table, | |
ba9dc657 | 103 | .no_dynamic_id = 1, |
1da177e4 LT |
104 | }; |
105 | ||
ea65370d | 106 | static struct usb_serial_driver cp2101_device = { |
18fcac35 GKH |
107 | .driver = { |
108 | .owner = THIS_MODULE, | |
269bda1c | 109 | .name = "cp2101", |
18fcac35 | 110 | }, |
d9b1b787 | 111 | .usb_driver = &cp2101_driver, |
1da177e4 | 112 | .id_table = id_table, |
1da177e4 LT |
113 | .num_ports = 1, |
114 | .open = cp2101_open, | |
115 | .close = cp2101_close, | |
116 | .break_ctl = cp2101_break_ctl, | |
117 | .set_termios = cp2101_set_termios, | |
39a66b8d CS |
118 | .tiocmget = cp2101_tiocmget, |
119 | .tiocmset = cp2101_tiocmset, | |
1da177e4 LT |
120 | .attach = cp2101_startup, |
121 | .shutdown = cp2101_shutdown, | |
122 | }; | |
123 | ||
39a66b8d | 124 | /* Config request types */ |
1da177e4 LT |
125 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
126 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
127 | ||
39a66b8d CS |
128 | /* Config SET requests. To GET, add 1 to the request number */ |
129 | #define CP2101_UART 0x00 /* Enable / Disable */ | |
130 | #define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */ | |
131 | #define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */ | |
132 | #define CP2101_BREAK 0x05 /* On / Off */ | |
133 | #define CP2101_CONTROL 0x07 /* Flow control line states */ | |
134 | #define CP2101_MODEMCTL 0x13 /* Modem controls */ | |
135 | #define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */ | |
1da177e4 | 136 | |
39a66b8d | 137 | /* CP2101_UART */ |
1da177e4 LT |
138 | #define UART_ENABLE 0x0001 |
139 | #define UART_DISABLE 0x0000 | |
140 | ||
39a66b8d | 141 | /* CP2101_BAUDRATE */ |
1da177e4 LT |
142 | #define BAUD_RATE_GEN_FREQ 0x384000 |
143 | ||
39a66b8d | 144 | /* CP2101_BITS */ |
1da177e4 | 145 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 146 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
147 | #define BITS_DATA_6 0X0600 |
148 | #define BITS_DATA_7 0X0700 | |
149 | #define BITS_DATA_8 0X0800 | |
150 | #define BITS_DATA_9 0X0900 | |
151 | ||
152 | #define BITS_PARITY_MASK 0x00f0 | |
153 | #define BITS_PARITY_NONE 0x0000 | |
154 | #define BITS_PARITY_ODD 0x0010 | |
155 | #define BITS_PARITY_EVEN 0x0020 | |
156 | #define BITS_PARITY_MARK 0x0030 | |
157 | #define BITS_PARITY_SPACE 0x0040 | |
158 | ||
159 | #define BITS_STOP_MASK 0x000f | |
160 | #define BITS_STOP_1 0x0000 | |
161 | #define BITS_STOP_1_5 0x0001 | |
162 | #define BITS_STOP_2 0x0002 | |
39a66b8d CS |
163 | |
164 | /* CP2101_BREAK */ | |
1da177e4 LT |
165 | #define BREAK_ON 0x0000 |
166 | #define BREAK_OFF 0x0001 | |
167 | ||
39a66b8d CS |
168 | /* CP2101_CONTROL */ |
169 | #define CONTROL_DTR 0x0001 | |
170 | #define CONTROL_RTS 0x0002 | |
171 | #define CONTROL_CTS 0x0010 | |
172 | #define CONTROL_DSR 0x0020 | |
173 | #define CONTROL_RING 0x0040 | |
174 | #define CONTROL_DCD 0x0080 | |
175 | #define CONTROL_WRITE_DTR 0x0100 | |
176 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 177 | |
39a66b8d CS |
178 | /* |
179 | * cp2101_get_config | |
180 | * Reads from the CP2101 configuration registers | |
181 | * 'size' is specified in bytes. | |
182 | * 'data' is a pointer to a pre-allocated array of integers large | |
183 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
184 | */ | |
185 | static int cp2101_get_config(struct usb_serial_port* port, u8 request, | |
186 | unsigned int *data, int size) | |
1da177e4 LT |
187 | { |
188 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 189 | __le32 *buf; |
39a66b8d CS |
190 | int result, i, length; |
191 | ||
192 | /* Number of integers required to contain the array */ | |
193 | length = (((size - 1) | 3) + 1)/4; | |
194 | ||
53ebb3b8 | 195 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 196 | if (!buf) { |
441b62c1 | 197 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
198 | return -ENOMEM; |
199 | } | |
1da177e4 | 200 | |
39a66b8d | 201 | /* For get requests, the request number must be incremented */ |
1da177e4 LT |
202 | request++; |
203 | ||
39a66b8d | 204 | /* Issue the request, attempting to read 'size' bytes */ |
1da177e4 LT |
205 | result = usb_control_msg (serial->dev,usb_rcvctrlpipe (serial->dev, 0), |
206 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, | |
39a66b8d | 207 | 0, buf, size, 300); |
1da177e4 | 208 | |
39a66b8d CS |
209 | /* Convert data into an array of integers */ |
210 | for (i=0; i<length; i++) | |
211 | data[i] = le32_to_cpu(buf[i]); | |
1da177e4 | 212 | |
39a66b8d | 213 | kfree(buf); |
1da177e4 | 214 | |
39a66b8d CS |
215 | if (result != size) { |
216 | dev_err(&port->dev, "%s - Unable to send config request, " | |
217 | "request=0x%x size=%d result=%d\n", | |
441b62c1 | 218 | __func__, request, size, result); |
39a66b8d CS |
219 | return -EPROTO; |
220 | } | |
1da177e4 | 221 | |
39a66b8d | 222 | return 0; |
1da177e4 LT |
223 | } |
224 | ||
39a66b8d CS |
225 | /* |
226 | * cp2101_set_config | |
227 | * Writes to the CP2101 configuration registers | |
228 | * Values less than 16 bits wide are sent directly | |
229 | * 'size' is specified in bytes. | |
230 | */ | |
231 | static int cp2101_set_config(struct usb_serial_port* port, u8 request, | |
232 | unsigned int *data, int size) | |
1da177e4 LT |
233 | { |
234 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 235 | __le32 *buf; |
39a66b8d | 236 | int result, i, length; |
1da177e4 | 237 | |
39a66b8d CS |
238 | /* Number of integers required to contain the array */ |
239 | length = (((size - 1) | 3) + 1)/4; | |
240 | ||
53ebb3b8 | 241 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
242 | if (!buf) { |
243 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 244 | __func__); |
39a66b8d CS |
245 | return -ENOMEM; |
246 | } | |
247 | ||
248 | /* Array of integers into bytes */ | |
249 | for (i = 0; i < length; i++) | |
250 | buf[i] = cpu_to_le32(data[i]); | |
251 | ||
252 | if (size > 2) { | |
253 | result = usb_control_msg (serial->dev, | |
254 | usb_sndctrlpipe(serial->dev, 0), | |
255 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
256 | 0, buf, size, 300); | |
257 | } else { | |
258 | result = usb_control_msg (serial->dev, | |
259 | usb_sndctrlpipe(serial->dev, 0), | |
260 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
261 | 0, NULL, 0, 300); | |
1da177e4 LT |
262 | } |
263 | ||
39a66b8d CS |
264 | kfree(buf); |
265 | ||
266 | if ((size > 2 && result != size) || result < 0) { | |
267 | dev_err(&port->dev, "%s - Unable to send request, " | |
268 | "request=0x%x size=%d result=%d\n", | |
441b62c1 | 269 | __func__, request, size, result); |
39a66b8d CS |
270 | return -EPROTO; |
271 | } | |
1da177e4 | 272 | |
39a66b8d CS |
273 | /* Single data value */ |
274 | result = usb_control_msg (serial->dev, | |
275 | usb_sndctrlpipe(serial->dev, 0), | |
276 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
277 | 0, NULL, 0, 300); | |
1da177e4 LT |
278 | return 0; |
279 | } | |
280 | ||
39a66b8d CS |
281 | /* |
282 | * cp2101_set_config_single | |
283 | * Convenience function for calling cp2101_set_config on single data values | |
284 | * without requiring an integer pointer | |
285 | */ | |
286 | static inline int cp2101_set_config_single(struct usb_serial_port* port, | |
287 | u8 request, unsigned int data) | |
288 | { | |
289 | return cp2101_set_config(port, request, &data, 2); | |
290 | } | |
291 | ||
1da177e4 LT |
292 | static int cp2101_open (struct usb_serial_port *port, struct file *filp) |
293 | { | |
294 | struct usb_serial *serial = port->serial; | |
295 | int result; | |
296 | ||
441b62c1 | 297 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 298 | |
39a66b8d | 299 | if (cp2101_set_config_single(port, CP2101_UART, UART_ENABLE)) { |
1da177e4 | 300 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
441b62c1 | 301 | __func__); |
1da177e4 LT |
302 | return -EPROTO; |
303 | } | |
304 | ||
305 | /* Start reading from the device */ | |
306 | usb_fill_bulk_urb (port->read_urb, serial->dev, | |
307 | usb_rcvbulkpipe(serial->dev, | |
308 | port->bulk_in_endpointAddress), | |
309 | port->read_urb->transfer_buffer, | |
310 | port->read_urb->transfer_buffer_length, | |
311 | serial->type->read_bulk_callback, | |
312 | port); | |
313 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
314 | if (result) { | |
315 | dev_err(&port->dev, "%s - failed resubmitting read urb, " | |
441b62c1 | 316 | "error %d\n", __func__, result); |
1da177e4 LT |
317 | return result; |
318 | } | |
319 | ||
39a66b8d | 320 | /* Configure the termios structure */ |
1da177e4 LT |
321 | cp2101_get_termios(port); |
322 | ||
39a66b8d CS |
323 | /* Set the DTR and RTS pins low */ |
324 | cp2101_tiocmset(port, NULL, TIOCM_DTR | TIOCM_RTS, 0); | |
325 | ||
1da177e4 LT |
326 | return 0; |
327 | } | |
328 | ||
329 | static void cp2101_cleanup (struct usb_serial_port *port) | |
330 | { | |
331 | struct usb_serial *serial = port->serial; | |
332 | ||
441b62c1 | 333 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
334 | |
335 | if (serial->dev) { | |
336 | /* shutdown any bulk reads that might be going on */ | |
337 | if (serial->num_bulk_out) | |
338 | usb_kill_urb(port->write_urb); | |
339 | if (serial->num_bulk_in) | |
340 | usb_kill_urb(port->read_urb); | |
341 | } | |
342 | } | |
343 | ||
344 | static void cp2101_close (struct usb_serial_port *port, struct file * filp) | |
345 | { | |
441b62c1 | 346 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
347 | |
348 | /* shutdown our urbs */ | |
441b62c1 | 349 | dbg("%s - shutting down urbs", __func__); |
1da177e4 LT |
350 | usb_kill_urb(port->write_urb); |
351 | usb_kill_urb(port->read_urb); | |
352 | ||
95bef012 ON |
353 | mutex_lock(&port->serial->disc_mutex); |
354 | if (!port->serial->disconnected) | |
355 | cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); | |
356 | mutex_unlock(&port->serial->disc_mutex); | |
1da177e4 LT |
357 | } |
358 | ||
39a66b8d CS |
359 | /* |
360 | * cp2101_get_termios | |
361 | * Reads the baud rate, data bits, parity, stop bits and flow control mode | |
362 | * from the device, corrects any unsupported values, and configures the | |
363 | * termios structure to reflect the state of the device | |
364 | */ | |
1da177e4 LT |
365 | static void cp2101_get_termios (struct usb_serial_port *port) |
366 | { | |
39a66b8d | 367 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
368 | unsigned int baud; |
369 | unsigned int bits; | |
1da177e4 | 370 | |
441b62c1 | 371 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 372 | |
01e96d28 | 373 | if (!port->tty || !port->tty->termios) { |
441b62c1 | 374 | dbg("%s - no tty structures", __func__); |
1da177e4 LT |
375 | return; |
376 | } | |
1da177e4 | 377 | |
39a66b8d CS |
378 | cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2); |
379 | /* Convert to baudrate */ | |
1da177e4 LT |
380 | if (baud) |
381 | baud = BAUD_RATE_GEN_FREQ / baud; | |
382 | ||
441b62c1 | 383 | dbg("%s - baud rate = %d", __func__, baud); |
9ab0f202 AC |
384 | |
385 | tty_encode_baud_rate(port->tty, baud, baud); | |
386 | cflag = port->tty->termios->c_cflag; | |
1da177e4 | 387 | |
39a66b8d | 388 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
389 | cflag &= ~CSIZE; |
390 | switch(bits & BITS_DATA_MASK) { | |
39a66b8d | 391 | case BITS_DATA_5: |
441b62c1 | 392 | dbg("%s - data bits = 5", __func__); |
39a66b8d CS |
393 | cflag |= CS5; |
394 | break; | |
1da177e4 | 395 | case BITS_DATA_6: |
441b62c1 | 396 | dbg("%s - data bits = 6", __func__); |
1da177e4 LT |
397 | cflag |= CS6; |
398 | break; | |
399 | case BITS_DATA_7: | |
441b62c1 | 400 | dbg("%s - data bits = 7", __func__); |
1da177e4 LT |
401 | cflag |= CS7; |
402 | break; | |
403 | case BITS_DATA_8: | |
441b62c1 | 404 | dbg("%s - data bits = 8", __func__); |
1da177e4 LT |
405 | cflag |= CS8; |
406 | break; | |
407 | case BITS_DATA_9: | |
408 | dbg("%s - data bits = 9 (not supported, " | |
441b62c1 | 409 | "using 8 data bits)", __func__); |
1da177e4 LT |
410 | cflag |= CS8; |
411 | bits &= ~BITS_DATA_MASK; | |
412 | bits |= BITS_DATA_8; | |
39a66b8d | 413 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
414 | break; |
415 | default: | |
416 | dbg("%s - Unknown number of data bits, " | |
441b62c1 | 417 | "using 8", __func__); |
1da177e4 LT |
418 | cflag |= CS8; |
419 | bits &= ~BITS_DATA_MASK; | |
420 | bits |= BITS_DATA_8; | |
39a66b8d | 421 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
422 | break; |
423 | } | |
424 | ||
425 | switch(bits & BITS_PARITY_MASK) { | |
426 | case BITS_PARITY_NONE: | |
441b62c1 | 427 | dbg("%s - parity = NONE", __func__); |
1da177e4 LT |
428 | cflag &= ~PARENB; |
429 | break; | |
430 | case BITS_PARITY_ODD: | |
441b62c1 | 431 | dbg("%s - parity = ODD", __func__); |
1da177e4 LT |
432 | cflag |= (PARENB|PARODD); |
433 | break; | |
434 | case BITS_PARITY_EVEN: | |
441b62c1 | 435 | dbg("%s - parity = EVEN", __func__); |
1da177e4 LT |
436 | cflag &= ~PARODD; |
437 | cflag |= PARENB; | |
438 | break; | |
439 | case BITS_PARITY_MARK: | |
440 | dbg("%s - parity = MARK (not supported, " | |
441b62c1 | 441 | "disabling parity)", __func__); |
1da177e4 LT |
442 | cflag &= ~PARENB; |
443 | bits &= ~BITS_PARITY_MASK; | |
39a66b8d | 444 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
445 | break; |
446 | case BITS_PARITY_SPACE: | |
447 | dbg("%s - parity = SPACE (not supported, " | |
441b62c1 | 448 | "disabling parity)", __func__); |
1da177e4 LT |
449 | cflag &= ~PARENB; |
450 | bits &= ~BITS_PARITY_MASK; | |
39a66b8d | 451 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
452 | break; |
453 | default: | |
454 | dbg("%s - Unknown parity mode, " | |
441b62c1 | 455 | "disabling parity", __func__); |
1da177e4 LT |
456 | cflag &= ~PARENB; |
457 | bits &= ~BITS_PARITY_MASK; | |
39a66b8d | 458 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
459 | break; |
460 | } | |
461 | ||
462 | cflag &= ~CSTOPB; | |
463 | switch(bits & BITS_STOP_MASK) { | |
464 | case BITS_STOP_1: | |
441b62c1 | 465 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
466 | break; |
467 | case BITS_STOP_1_5: | |
468 | dbg("%s - stop bits = 1.5 (not supported, " | |
441b62c1 | 469 | "using 1 stop bit)", __func__); |
1da177e4 | 470 | bits &= ~BITS_STOP_MASK; |
39a66b8d | 471 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
472 | break; |
473 | case BITS_STOP_2: | |
441b62c1 | 474 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
475 | cflag |= CSTOPB; |
476 | break; | |
477 | default: | |
478 | dbg("%s - Unknown number of stop bits, " | |
441b62c1 | 479 | "using 1 stop bit", __func__); |
1da177e4 | 480 | bits &= ~BITS_STOP_MASK; |
39a66b8d | 481 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
482 | break; |
483 | } | |
484 | ||
39a66b8d CS |
485 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); |
486 | if (modem_ctl[0] & 0x0008) { | |
441b62c1 | 487 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
488 | cflag |= CRTSCTS; |
489 | } else { | |
441b62c1 | 490 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
491 | cflag &= ~CRTSCTS; |
492 | } | |
493 | ||
1da177e4 LT |
494 | port->tty->termios->c_cflag = cflag; |
495 | } | |
496 | ||
497 | static void cp2101_set_termios (struct usb_serial_port *port, | |
606d099c | 498 | struct ktermios *old_termios) |
1da177e4 | 499 | { |
9ab0f202 | 500 | unsigned int cflag, old_cflag; |
b2bdd1f5 | 501 | unsigned int baud = 0, bits; |
39a66b8d | 502 | unsigned int modem_ctl[4]; |
1da177e4 | 503 | |
441b62c1 | 504 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 505 | |
c4e41562 | 506 | if (!port->tty || !port->tty->termios) { |
441b62c1 | 507 | dbg("%s - no tty structures", __func__); |
1da177e4 LT |
508 | return; |
509 | } | |
9ab0f202 AC |
510 | port->tty->termios->c_cflag &= ~CMSPAR; |
511 | ||
1da177e4 | 512 | cflag = port->tty->termios->c_cflag; |
01e96d28 AC |
513 | old_cflag = old_termios->c_cflag; |
514 | baud = tty_get_baud_rate(port->tty); | |
1da177e4 LT |
515 | |
516 | /* If the baud rate is to be updated*/ | |
01e96d28 AC |
517 | if (baud != tty_termios_baud_rate(old_termios)) { |
518 | switch (baud) { | |
519 | case 0: | |
520 | case 600: | |
521 | case 1200: | |
522 | case 1800: | |
523 | case 2400: | |
524 | case 4800: | |
525 | case 7200: | |
526 | case 9600: | |
527 | case 14400: | |
528 | case 19200: | |
529 | case 28800: | |
530 | case 38400: | |
531 | case 55854: | |
532 | case 57600: | |
533 | case 115200: | |
534 | case 127117: | |
535 | case 230400: | |
536 | case 460800: | |
537 | case 921600: | |
538 | case 3686400: | |
539 | break; | |
1da177e4 | 540 | default: |
01e96d28 | 541 | baud = 9600; |
1da177e4 LT |
542 | break; |
543 | } | |
544 | ||
545 | if (baud) { | |
441b62c1 | 546 | dbg("%s - Setting baud rate to %d baud", __func__, |
1da177e4 | 547 | baud); |
39a66b8d | 548 | if (cp2101_set_config_single(port, CP2101_BAUDRATE, |
9ab0f202 | 549 | (BAUD_RATE_GEN_FREQ / baud))) { |
1da177e4 LT |
550 | dev_err(&port->dev, "Baud rate requested not " |
551 | "supported by device\n"); | |
9ab0f202 AC |
552 | baud = tty_termios_baud_rate(old_termios); |
553 | } | |
1da177e4 LT |
554 | } |
555 | } | |
9ab0f202 AC |
556 | /* Report back the resulting baud rate */ |
557 | tty_encode_baud_rate(port->tty, baud, baud); | |
1da177e4 | 558 | |
39a66b8d | 559 | /* If the number of data bits is to be updated */ |
1da177e4 | 560 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
39a66b8d | 561 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
562 | bits &= ~BITS_DATA_MASK; |
563 | switch (cflag & CSIZE) { | |
39a66b8d CS |
564 | case CS5: |
565 | bits |= BITS_DATA_5; | |
441b62c1 | 566 | dbg("%s - data bits = 5", __func__); |
39a66b8d | 567 | break; |
1da177e4 LT |
568 | case CS6: |
569 | bits |= BITS_DATA_6; | |
441b62c1 | 570 | dbg("%s - data bits = 6", __func__); |
1da177e4 LT |
571 | break; |
572 | case CS7: | |
573 | bits |= BITS_DATA_7; | |
441b62c1 | 574 | dbg("%s - data bits = 7", __func__); |
1da177e4 LT |
575 | break; |
576 | case CS8: | |
577 | bits |= BITS_DATA_8; | |
441b62c1 | 578 | dbg("%s - data bits = 8", __func__); |
1da177e4 LT |
579 | break; |
580 | /*case CS9: | |
581 | bits |= BITS_DATA_9; | |
441b62c1 | 582 | dbg("%s - data bits = 9", __func__); |
1da177e4 LT |
583 | break;*/ |
584 | default: | |
585 | dev_err(&port->dev, "cp2101 driver does not " | |
586 | "support the number of bits requested," | |
587 | " using 8 bit mode\n"); | |
588 | bits |= BITS_DATA_8; | |
589 | break; | |
590 | } | |
39a66b8d | 591 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
592 | dev_err(&port->dev, "Number of data bits requested " |
593 | "not supported by device\n"); | |
594 | } | |
595 | ||
596 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
39a66b8d | 597 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
598 | bits &= ~BITS_PARITY_MASK; |
599 | if (cflag & PARENB) { | |
600 | if (cflag & PARODD) { | |
601 | bits |= BITS_PARITY_ODD; | |
441b62c1 | 602 | dbg("%s - parity = ODD", __func__); |
1da177e4 LT |
603 | } else { |
604 | bits |= BITS_PARITY_EVEN; | |
441b62c1 | 605 | dbg("%s - parity = EVEN", __func__); |
1da177e4 LT |
606 | } |
607 | } | |
39a66b8d | 608 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
609 | dev_err(&port->dev, "Parity mode not supported " |
610 | "by device\n"); | |
611 | } | |
612 | ||
613 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
39a66b8d | 614 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
615 | bits &= ~BITS_STOP_MASK; |
616 | if (cflag & CSTOPB) { | |
617 | bits |= BITS_STOP_2; | |
441b62c1 | 618 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
619 | } else { |
620 | bits |= BITS_STOP_1; | |
441b62c1 | 621 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 622 | } |
39a66b8d | 623 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
624 | dev_err(&port->dev, "Number of stop bits requested " |
625 | "not supported by device\n"); | |
626 | } | |
39a66b8d CS |
627 | |
628 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
629 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
630 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 631 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
632 | modem_ctl[2], modem_ctl[3]); |
633 | ||
634 | if (cflag & CRTSCTS) { | |
635 | modem_ctl[0] &= ~0x7B; | |
636 | modem_ctl[0] |= 0x09; | |
637 | modem_ctl[1] = 0x80; | |
441b62c1 | 638 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
639 | } else { |
640 | modem_ctl[0] &= ~0x7B; | |
641 | modem_ctl[0] |= 0x01; | |
642 | modem_ctl[1] |= 0x40; | |
441b62c1 | 643 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
644 | } |
645 | ||
646 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 647 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
648 | modem_ctl[2], modem_ctl[3]); |
649 | cp2101_set_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
650 | } | |
651 | ||
652 | } | |
653 | ||
654 | static int cp2101_tiocmset (struct usb_serial_port *port, struct file *file, | |
655 | unsigned int set, unsigned int clear) | |
656 | { | |
b2bdd1f5 | 657 | unsigned int control = 0; |
39a66b8d | 658 | |
441b62c1 | 659 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
660 | |
661 | if (set & TIOCM_RTS) { | |
662 | control |= CONTROL_RTS; | |
663 | control |= CONTROL_WRITE_RTS; | |
664 | } | |
665 | if (set & TIOCM_DTR) { | |
666 | control |= CONTROL_DTR; | |
667 | control |= CONTROL_WRITE_DTR; | |
668 | } | |
669 | if (clear & TIOCM_RTS) { | |
670 | control &= ~CONTROL_RTS; | |
671 | control |= CONTROL_WRITE_RTS; | |
672 | } | |
673 | if (clear & TIOCM_DTR) { | |
674 | control &= ~CONTROL_DTR; | |
675 | control |= CONTROL_WRITE_DTR; | |
676 | } | |
677 | ||
441b62c1 | 678 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d CS |
679 | |
680 | return cp2101_set_config(port, CP2101_CONTROL, &control, 2); | |
681 | ||
682 | } | |
683 | ||
684 | static int cp2101_tiocmget (struct usb_serial_port *port, struct file *file) | |
685 | { | |
b2bdd1f5 HH |
686 | unsigned int control; |
687 | int result; | |
39a66b8d | 688 | |
441b62c1 | 689 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
690 | |
691 | cp2101_get_config(port, CP2101_CONTROL, &control, 1); | |
692 | ||
693 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
694 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
695 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
696 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
697 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
698 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
699 | ||
441b62c1 | 700 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
701 | |
702 | return result; | |
1da177e4 LT |
703 | } |
704 | ||
705 | static void cp2101_break_ctl (struct usb_serial_port *port, int break_state) | |
706 | { | |
b2bdd1f5 | 707 | unsigned int state; |
1da177e4 | 708 | |
441b62c1 | 709 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
710 | if (break_state == 0) |
711 | state = BREAK_OFF; | |
712 | else | |
713 | state = BREAK_ON; | |
441b62c1 | 714 | dbg("%s - turning break %s", __func__, |
1da177e4 | 715 | state==BREAK_OFF ? "off" : "on"); |
39a66b8d | 716 | cp2101_set_config(port, CP2101_BREAK, &state, 2); |
1da177e4 LT |
717 | } |
718 | ||
719 | static int cp2101_startup (struct usb_serial *serial) | |
720 | { | |
39a66b8d | 721 | /* CP2101 buffers behave strangely unless device is reset */ |
1da177e4 LT |
722 | usb_reset_device(serial->dev); |
723 | return 0; | |
724 | } | |
725 | ||
726 | static void cp2101_shutdown (struct usb_serial *serial) | |
727 | { | |
728 | int i; | |
729 | ||
441b62c1 | 730 | dbg("%s", __func__); |
1da177e4 | 731 | |
39a66b8d | 732 | /* Stop reads and writes on all ports */ |
1da177e4 LT |
733 | for (i=0; i < serial->num_ports; ++i) { |
734 | cp2101_cleanup(serial->port[i]); | |
735 | } | |
736 | } | |
737 | ||
738 | static int __init cp2101_init (void) | |
739 | { | |
740 | int retval; | |
741 | ||
742 | retval = usb_serial_register(&cp2101_device); | |
743 | if (retval) | |
39a66b8d | 744 | return retval; /* Failed to register */ |
1da177e4 LT |
745 | |
746 | retval = usb_register(&cp2101_driver); | |
747 | if (retval) { | |
39a66b8d | 748 | /* Failed to register */ |
1da177e4 LT |
749 | usb_serial_deregister(&cp2101_device); |
750 | return retval; | |
751 | } | |
752 | ||
39a66b8d | 753 | /* Success */ |
1da177e4 LT |
754 | info(DRIVER_DESC " " DRIVER_VERSION); |
755 | return 0; | |
756 | } | |
757 | ||
758 | static void __exit cp2101_exit (void) | |
759 | { | |
760 | usb_deregister (&cp2101_driver); | |
761 | usb_serial_deregister (&cp2101_device); | |
762 | } | |
763 | ||
764 | module_init(cp2101_init); | |
765 | module_exit(cp2101_exit); | |
766 | ||
767 | MODULE_DESCRIPTION(DRIVER_DESC); | |
768 | MODULE_VERSION(DRIVER_VERSION); | |
769 | MODULE_LICENSE("GPL"); | |
770 | ||
771 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
772 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |