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 [] = { | |
1f4f714f | 56 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
198b9517 | 57 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 58 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
198b9517 | 59 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
60 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
61 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
5de8b3ac | 62 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 63 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
92f5cae2 | 64 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
212a4b4e | 65 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
e988fc8a CS |
66 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
67 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 68 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a CS |
69 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
70 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ | |
fc4bd64c JH |
71 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
72 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
e988fc8a | 73 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
78001e3d BS |
74 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
75 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 76 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
78001e3d | 77 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
e988fc8a | 78 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 79 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
5de8b3ac CS |
80 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
81 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
82 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
83 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 84 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
e05998d5 | 85 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
5de8b3ac | 86 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 87 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
39a66b8d | 88 | { } /* Terminating Entry */ |
1da177e4 LT |
89 | }; |
90 | ||
91 | MODULE_DEVICE_TABLE (usb, id_table); | |
92 | ||
93 | static struct usb_driver cp2101_driver = { | |
269bda1c | 94 | .name = "cp2101", |
1da177e4 LT |
95 | .probe = usb_serial_probe, |
96 | .disconnect = usb_serial_disconnect, | |
97 | .id_table = id_table, | |
ba9dc657 | 98 | .no_dynamic_id = 1, |
1da177e4 LT |
99 | }; |
100 | ||
ea65370d | 101 | static struct usb_serial_driver cp2101_device = { |
18fcac35 GKH |
102 | .driver = { |
103 | .owner = THIS_MODULE, | |
269bda1c | 104 | .name = "cp2101", |
18fcac35 | 105 | }, |
d9b1b787 | 106 | .usb_driver = &cp2101_driver, |
1da177e4 LT |
107 | .id_table = id_table, |
108 | .num_interrupt_in = 0, | |
8be27c2d JL |
109 | .num_bulk_in = NUM_DONT_CARE, |
110 | .num_bulk_out = NUM_DONT_CARE, | |
1da177e4 LT |
111 | .num_ports = 1, |
112 | .open = cp2101_open, | |
113 | .close = cp2101_close, | |
114 | .break_ctl = cp2101_break_ctl, | |
115 | .set_termios = cp2101_set_termios, | |
39a66b8d CS |
116 | .tiocmget = cp2101_tiocmget, |
117 | .tiocmset = cp2101_tiocmset, | |
1da177e4 LT |
118 | .attach = cp2101_startup, |
119 | .shutdown = cp2101_shutdown, | |
120 | }; | |
121 | ||
39a66b8d | 122 | /* Config request types */ |
1da177e4 LT |
123 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
124 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
125 | ||
39a66b8d CS |
126 | /* Config SET requests. To GET, add 1 to the request number */ |
127 | #define CP2101_UART 0x00 /* Enable / Disable */ | |
128 | #define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */ | |
129 | #define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */ | |
130 | #define CP2101_BREAK 0x05 /* On / Off */ | |
131 | #define CP2101_CONTROL 0x07 /* Flow control line states */ | |
132 | #define CP2101_MODEMCTL 0x13 /* Modem controls */ | |
133 | #define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */ | |
1da177e4 | 134 | |
39a66b8d | 135 | /* CP2101_UART */ |
1da177e4 LT |
136 | #define UART_ENABLE 0x0001 |
137 | #define UART_DISABLE 0x0000 | |
138 | ||
39a66b8d | 139 | /* CP2101_BAUDRATE */ |
1da177e4 LT |
140 | #define BAUD_RATE_GEN_FREQ 0x384000 |
141 | ||
39a66b8d | 142 | /* CP2101_BITS */ |
1da177e4 | 143 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 144 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
145 | #define BITS_DATA_6 0X0600 |
146 | #define BITS_DATA_7 0X0700 | |
147 | #define BITS_DATA_8 0X0800 | |
148 | #define BITS_DATA_9 0X0900 | |
149 | ||
150 | #define BITS_PARITY_MASK 0x00f0 | |
151 | #define BITS_PARITY_NONE 0x0000 | |
152 | #define BITS_PARITY_ODD 0x0010 | |
153 | #define BITS_PARITY_EVEN 0x0020 | |
154 | #define BITS_PARITY_MARK 0x0030 | |
155 | #define BITS_PARITY_SPACE 0x0040 | |
156 | ||
157 | #define BITS_STOP_MASK 0x000f | |
158 | #define BITS_STOP_1 0x0000 | |
159 | #define BITS_STOP_1_5 0x0001 | |
160 | #define BITS_STOP_2 0x0002 | |
39a66b8d CS |
161 | |
162 | /* CP2101_BREAK */ | |
1da177e4 LT |
163 | #define BREAK_ON 0x0000 |
164 | #define BREAK_OFF 0x0001 | |
165 | ||
39a66b8d CS |
166 | /* CP2101_CONTROL */ |
167 | #define CONTROL_DTR 0x0001 | |
168 | #define CONTROL_RTS 0x0002 | |
169 | #define CONTROL_CTS 0x0010 | |
170 | #define CONTROL_DSR 0x0020 | |
171 | #define CONTROL_RING 0x0040 | |
172 | #define CONTROL_DCD 0x0080 | |
173 | #define CONTROL_WRITE_DTR 0x0100 | |
174 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 175 | |
39a66b8d CS |
176 | /* |
177 | * cp2101_get_config | |
178 | * Reads from the CP2101 configuration registers | |
179 | * 'size' is specified in bytes. | |
180 | * 'data' is a pointer to a pre-allocated array of integers large | |
181 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
182 | */ | |
183 | static int cp2101_get_config(struct usb_serial_port* port, u8 request, | |
184 | unsigned int *data, int size) | |
1da177e4 LT |
185 | { |
186 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 187 | __le32 *buf; |
39a66b8d CS |
188 | int result, i, length; |
189 | ||
190 | /* Number of integers required to contain the array */ | |
191 | length = (((size - 1) | 3) + 1)/4; | |
192 | ||
53ebb3b8 | 193 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
194 | if (!buf) { |
195 | dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__); | |
196 | return -ENOMEM; | |
197 | } | |
1da177e4 | 198 | |
39a66b8d | 199 | /* For get requests, the request number must be incremented */ |
1da177e4 LT |
200 | request++; |
201 | ||
39a66b8d | 202 | /* Issue the request, attempting to read 'size' bytes */ |
1da177e4 LT |
203 | result = usb_control_msg (serial->dev,usb_rcvctrlpipe (serial->dev, 0), |
204 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, | |
39a66b8d | 205 | 0, buf, size, 300); |
1da177e4 | 206 | |
39a66b8d CS |
207 | /* Convert data into an array of integers */ |
208 | for (i=0; i<length; i++) | |
209 | data[i] = le32_to_cpu(buf[i]); | |
1da177e4 | 210 | |
39a66b8d | 211 | kfree(buf); |
1da177e4 | 212 | |
39a66b8d CS |
213 | if (result != size) { |
214 | dev_err(&port->dev, "%s - Unable to send config request, " | |
215 | "request=0x%x size=%d result=%d\n", | |
216 | __FUNCTION__, request, size, result); | |
217 | return -EPROTO; | |
218 | } | |
1da177e4 | 219 | |
39a66b8d | 220 | return 0; |
1da177e4 LT |
221 | } |
222 | ||
39a66b8d CS |
223 | /* |
224 | * cp2101_set_config | |
225 | * Writes to the CP2101 configuration registers | |
226 | * Values less than 16 bits wide are sent directly | |
227 | * 'size' is specified in bytes. | |
228 | */ | |
229 | static int cp2101_set_config(struct usb_serial_port* port, u8 request, | |
230 | unsigned int *data, int size) | |
1da177e4 LT |
231 | { |
232 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 233 | __le32 *buf; |
39a66b8d | 234 | int result, i, length; |
1da177e4 | 235 | |
39a66b8d CS |
236 | /* Number of integers required to contain the array */ |
237 | length = (((size - 1) | 3) + 1)/4; | |
238 | ||
53ebb3b8 | 239 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
240 | if (!buf) { |
241 | dev_err(&port->dev, "%s - out of memory.\n", | |
242 | __FUNCTION__); | |
243 | return -ENOMEM; | |
244 | } | |
245 | ||
246 | /* Array of integers into bytes */ | |
247 | for (i = 0; i < length; i++) | |
248 | buf[i] = cpu_to_le32(data[i]); | |
249 | ||
250 | if (size > 2) { | |
251 | result = usb_control_msg (serial->dev, | |
252 | usb_sndctrlpipe(serial->dev, 0), | |
253 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
254 | 0, buf, size, 300); | |
255 | } else { | |
256 | result = usb_control_msg (serial->dev, | |
257 | usb_sndctrlpipe(serial->dev, 0), | |
258 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
259 | 0, NULL, 0, 300); | |
1da177e4 LT |
260 | } |
261 | ||
39a66b8d CS |
262 | kfree(buf); |
263 | ||
264 | if ((size > 2 && result != size) || result < 0) { | |
265 | dev_err(&port->dev, "%s - Unable to send request, " | |
266 | "request=0x%x size=%d result=%d\n", | |
267 | __FUNCTION__, request, size, result); | |
268 | return -EPROTO; | |
269 | } | |
1da177e4 | 270 | |
39a66b8d CS |
271 | /* Single data value */ |
272 | result = usb_control_msg (serial->dev, | |
273 | usb_sndctrlpipe(serial->dev, 0), | |
274 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
275 | 0, NULL, 0, 300); | |
1da177e4 LT |
276 | return 0; |
277 | } | |
278 | ||
39a66b8d CS |
279 | /* |
280 | * cp2101_set_config_single | |
281 | * Convenience function for calling cp2101_set_config on single data values | |
282 | * without requiring an integer pointer | |
283 | */ | |
284 | static inline int cp2101_set_config_single(struct usb_serial_port* port, | |
285 | u8 request, unsigned int data) | |
286 | { | |
287 | return cp2101_set_config(port, request, &data, 2); | |
288 | } | |
289 | ||
1da177e4 LT |
290 | static int cp2101_open (struct usb_serial_port *port, struct file *filp) |
291 | { | |
292 | struct usb_serial *serial = port->serial; | |
293 | int result; | |
294 | ||
295 | dbg("%s - port %d", __FUNCTION__, port->number); | |
296 | ||
39a66b8d | 297 | if (cp2101_set_config_single(port, CP2101_UART, UART_ENABLE)) { |
1da177e4 LT |
298 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
299 | __FUNCTION__); | |
300 | return -EPROTO; | |
301 | } | |
302 | ||
303 | /* Start reading from the device */ | |
304 | usb_fill_bulk_urb (port->read_urb, serial->dev, | |
305 | usb_rcvbulkpipe(serial->dev, | |
306 | port->bulk_in_endpointAddress), | |
307 | port->read_urb->transfer_buffer, | |
308 | port->read_urb->transfer_buffer_length, | |
309 | serial->type->read_bulk_callback, | |
310 | port); | |
311 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
312 | if (result) { | |
313 | dev_err(&port->dev, "%s - failed resubmitting read urb, " | |
314 | "error %d\n", __FUNCTION__, result); | |
315 | return result; | |
316 | } | |
317 | ||
39a66b8d | 318 | /* Configure the termios structure */ |
1da177e4 LT |
319 | cp2101_get_termios(port); |
320 | ||
39a66b8d CS |
321 | /* Set the DTR and RTS pins low */ |
322 | cp2101_tiocmset(port, NULL, TIOCM_DTR | TIOCM_RTS, 0); | |
323 | ||
1da177e4 LT |
324 | return 0; |
325 | } | |
326 | ||
327 | static void cp2101_cleanup (struct usb_serial_port *port) | |
328 | { | |
329 | struct usb_serial *serial = port->serial; | |
330 | ||
331 | dbg("%s - port %d", __FUNCTION__, port->number); | |
332 | ||
333 | if (serial->dev) { | |
334 | /* shutdown any bulk reads that might be going on */ | |
335 | if (serial->num_bulk_out) | |
336 | usb_kill_urb(port->write_urb); | |
337 | if (serial->num_bulk_in) | |
338 | usb_kill_urb(port->read_urb); | |
339 | } | |
340 | } | |
341 | ||
342 | static void cp2101_close (struct usb_serial_port *port, struct file * filp) | |
343 | { | |
344 | dbg("%s - port %d", __FUNCTION__, port->number); | |
345 | ||
346 | /* shutdown our urbs */ | |
347 | dbg("%s - shutting down urbs", __FUNCTION__); | |
348 | usb_kill_urb(port->write_urb); | |
349 | usb_kill_urb(port->read_urb); | |
350 | ||
39a66b8d | 351 | cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); |
1da177e4 LT |
352 | } |
353 | ||
39a66b8d CS |
354 | /* |
355 | * cp2101_get_termios | |
356 | * Reads the baud rate, data bits, parity, stop bits and flow control mode | |
357 | * from the device, corrects any unsupported values, and configures the | |
358 | * termios structure to reflect the state of the device | |
359 | */ | |
1da177e4 LT |
360 | static void cp2101_get_termios (struct usb_serial_port *port) |
361 | { | |
39a66b8d | 362 | unsigned int cflag, modem_ctl[4]; |
1da177e4 LT |
363 | int baud; |
364 | int bits; | |
365 | ||
366 | dbg("%s - port %d", __FUNCTION__, port->number); | |
367 | ||
01e96d28 | 368 | if (!port->tty || !port->tty->termios) { |
1da177e4 LT |
369 | dbg("%s - no tty structures", __FUNCTION__); |
370 | return; | |
371 | } | |
1da177e4 | 372 | |
39a66b8d CS |
373 | cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2); |
374 | /* Convert to baudrate */ | |
1da177e4 LT |
375 | if (baud) |
376 | baud = BAUD_RATE_GEN_FREQ / baud; | |
377 | ||
378 | dbg("%s - baud rate = %d", __FUNCTION__, baud); | |
9ab0f202 AC |
379 | |
380 | tty_encode_baud_rate(port->tty, baud, baud); | |
381 | cflag = port->tty->termios->c_cflag; | |
1da177e4 | 382 | |
39a66b8d | 383 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
384 | cflag &= ~CSIZE; |
385 | switch(bits & BITS_DATA_MASK) { | |
39a66b8d CS |
386 | case BITS_DATA_5: |
387 | dbg("%s - data bits = 5", __FUNCTION__); | |
388 | cflag |= CS5; | |
389 | break; | |
1da177e4 LT |
390 | case BITS_DATA_6: |
391 | dbg("%s - data bits = 6", __FUNCTION__); | |
392 | cflag |= CS6; | |
393 | break; | |
394 | case BITS_DATA_7: | |
395 | dbg("%s - data bits = 7", __FUNCTION__); | |
396 | cflag |= CS7; | |
397 | break; | |
398 | case BITS_DATA_8: | |
399 | dbg("%s - data bits = 8", __FUNCTION__); | |
400 | cflag |= CS8; | |
401 | break; | |
402 | case BITS_DATA_9: | |
403 | dbg("%s - data bits = 9 (not supported, " | |
404 | "using 8 data bits)", __FUNCTION__); | |
405 | cflag |= CS8; | |
406 | bits &= ~BITS_DATA_MASK; | |
407 | bits |= BITS_DATA_8; | |
39a66b8d | 408 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
409 | break; |
410 | default: | |
411 | dbg("%s - Unknown number of data bits, " | |
412 | "using 8", __FUNCTION__); | |
413 | cflag |= CS8; | |
414 | bits &= ~BITS_DATA_MASK; | |
415 | bits |= BITS_DATA_8; | |
39a66b8d | 416 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
417 | break; |
418 | } | |
419 | ||
420 | switch(bits & BITS_PARITY_MASK) { | |
421 | case BITS_PARITY_NONE: | |
422 | dbg("%s - parity = NONE", __FUNCTION__); | |
423 | cflag &= ~PARENB; | |
424 | break; | |
425 | case BITS_PARITY_ODD: | |
426 | dbg("%s - parity = ODD", __FUNCTION__); | |
427 | cflag |= (PARENB|PARODD); | |
428 | break; | |
429 | case BITS_PARITY_EVEN: | |
430 | dbg("%s - parity = EVEN", __FUNCTION__); | |
431 | cflag &= ~PARODD; | |
432 | cflag |= PARENB; | |
433 | break; | |
434 | case BITS_PARITY_MARK: | |
435 | dbg("%s - parity = MARK (not supported, " | |
436 | "disabling parity)", __FUNCTION__); | |
437 | cflag &= ~PARENB; | |
438 | bits &= ~BITS_PARITY_MASK; | |
39a66b8d | 439 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
440 | break; |
441 | case BITS_PARITY_SPACE: | |
442 | dbg("%s - parity = SPACE (not supported, " | |
443 | "disabling parity)", __FUNCTION__); | |
444 | cflag &= ~PARENB; | |
445 | bits &= ~BITS_PARITY_MASK; | |
39a66b8d | 446 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
447 | break; |
448 | default: | |
449 | dbg("%s - Unknown parity mode, " | |
450 | "disabling parity", __FUNCTION__); | |
451 | cflag &= ~PARENB; | |
452 | bits &= ~BITS_PARITY_MASK; | |
39a66b8d | 453 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
454 | break; |
455 | } | |
456 | ||
457 | cflag &= ~CSTOPB; | |
458 | switch(bits & BITS_STOP_MASK) { | |
459 | case BITS_STOP_1: | |
460 | dbg("%s - stop bits = 1", __FUNCTION__); | |
461 | break; | |
462 | case BITS_STOP_1_5: | |
463 | dbg("%s - stop bits = 1.5 (not supported, " | |
39a66b8d | 464 | "using 1 stop bit)", __FUNCTION__); |
1da177e4 | 465 | bits &= ~BITS_STOP_MASK; |
39a66b8d | 466 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
467 | break; |
468 | case BITS_STOP_2: | |
469 | dbg("%s - stop bits = 2", __FUNCTION__); | |
470 | cflag |= CSTOPB; | |
471 | break; | |
472 | default: | |
473 | dbg("%s - Unknown number of stop bits, " | |
474 | "using 1 stop bit", __FUNCTION__); | |
475 | bits &= ~BITS_STOP_MASK; | |
39a66b8d | 476 | cp2101_set_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
477 | break; |
478 | } | |
479 | ||
39a66b8d CS |
480 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); |
481 | if (modem_ctl[0] & 0x0008) { | |
482 | dbg("%s - flow control = CRTSCTS", __FUNCTION__); | |
483 | cflag |= CRTSCTS; | |
484 | } else { | |
485 | dbg("%s - flow control = NONE", __FUNCTION__); | |
486 | cflag &= ~CRTSCTS; | |
487 | } | |
488 | ||
1da177e4 LT |
489 | port->tty->termios->c_cflag = cflag; |
490 | } | |
491 | ||
492 | static void cp2101_set_termios (struct usb_serial_port *port, | |
606d099c | 493 | struct ktermios *old_termios) |
1da177e4 | 494 | { |
9ab0f202 | 495 | unsigned int cflag, old_cflag; |
39a66b8d CS |
496 | int baud=0, bits; |
497 | unsigned int modem_ctl[4]; | |
1da177e4 LT |
498 | |
499 | dbg("%s - port %d", __FUNCTION__, port->number); | |
500 | ||
c4e41562 | 501 | if (!port->tty || !port->tty->termios) { |
1da177e4 LT |
502 | dbg("%s - no tty structures", __FUNCTION__); |
503 | return; | |
504 | } | |
9ab0f202 AC |
505 | port->tty->termios->c_cflag &= ~CMSPAR; |
506 | ||
1da177e4 | 507 | cflag = port->tty->termios->c_cflag; |
01e96d28 AC |
508 | old_cflag = old_termios->c_cflag; |
509 | baud = tty_get_baud_rate(port->tty); | |
1da177e4 LT |
510 | |
511 | /* If the baud rate is to be updated*/ | |
01e96d28 AC |
512 | if (baud != tty_termios_baud_rate(old_termios)) { |
513 | switch (baud) { | |
514 | case 0: | |
515 | case 600: | |
516 | case 1200: | |
517 | case 1800: | |
518 | case 2400: | |
519 | case 4800: | |
520 | case 7200: | |
521 | case 9600: | |
522 | case 14400: | |
523 | case 19200: | |
524 | case 28800: | |
525 | case 38400: | |
526 | case 55854: | |
527 | case 57600: | |
528 | case 115200: | |
529 | case 127117: | |
530 | case 230400: | |
531 | case 460800: | |
532 | case 921600: | |
533 | case 3686400: | |
534 | break; | |
1da177e4 | 535 | default: |
01e96d28 | 536 | baud = 9600; |
1da177e4 LT |
537 | break; |
538 | } | |
539 | ||
540 | if (baud) { | |
541 | dbg("%s - Setting baud rate to %d baud", __FUNCTION__, | |
542 | baud); | |
39a66b8d | 543 | if (cp2101_set_config_single(port, CP2101_BAUDRATE, |
9ab0f202 | 544 | (BAUD_RATE_GEN_FREQ / baud))) { |
1da177e4 LT |
545 | dev_err(&port->dev, "Baud rate requested not " |
546 | "supported by device\n"); | |
9ab0f202 AC |
547 | baud = tty_termios_baud_rate(old_termios); |
548 | } | |
1da177e4 LT |
549 | } |
550 | } | |
9ab0f202 AC |
551 | /* Report back the resulting baud rate */ |
552 | tty_encode_baud_rate(port->tty, baud, baud); | |
1da177e4 | 553 | |
39a66b8d | 554 | /* If the number of data bits is to be updated */ |
1da177e4 | 555 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
39a66b8d | 556 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
557 | bits &= ~BITS_DATA_MASK; |
558 | switch (cflag & CSIZE) { | |
39a66b8d CS |
559 | case CS5: |
560 | bits |= BITS_DATA_5; | |
561 | dbg("%s - data bits = 5", __FUNCTION__); | |
562 | break; | |
1da177e4 LT |
563 | case CS6: |
564 | bits |= BITS_DATA_6; | |
565 | dbg("%s - data bits = 6", __FUNCTION__); | |
566 | break; | |
567 | case CS7: | |
568 | bits |= BITS_DATA_7; | |
569 | dbg("%s - data bits = 7", __FUNCTION__); | |
570 | break; | |
571 | case CS8: | |
572 | bits |= BITS_DATA_8; | |
573 | dbg("%s - data bits = 8", __FUNCTION__); | |
574 | break; | |
575 | /*case CS9: | |
576 | bits |= BITS_DATA_9; | |
577 | dbg("%s - data bits = 9", __FUNCTION__); | |
578 | break;*/ | |
579 | default: | |
580 | dev_err(&port->dev, "cp2101 driver does not " | |
581 | "support the number of bits requested," | |
582 | " using 8 bit mode\n"); | |
583 | bits |= BITS_DATA_8; | |
584 | break; | |
585 | } | |
39a66b8d | 586 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
587 | dev_err(&port->dev, "Number of data bits requested " |
588 | "not supported by device\n"); | |
589 | } | |
590 | ||
591 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
39a66b8d | 592 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
593 | bits &= ~BITS_PARITY_MASK; |
594 | if (cflag & PARENB) { | |
595 | if (cflag & PARODD) { | |
596 | bits |= BITS_PARITY_ODD; | |
597 | dbg("%s - parity = ODD", __FUNCTION__); | |
598 | } else { | |
599 | bits |= BITS_PARITY_EVEN; | |
600 | dbg("%s - parity = EVEN", __FUNCTION__); | |
601 | } | |
602 | } | |
39a66b8d | 603 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
604 | dev_err(&port->dev, "Parity mode not supported " |
605 | "by device\n"); | |
606 | } | |
607 | ||
608 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
39a66b8d | 609 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
610 | bits &= ~BITS_STOP_MASK; |
611 | if (cflag & CSTOPB) { | |
612 | bits |= BITS_STOP_2; | |
613 | dbg("%s - stop bits = 2", __FUNCTION__); | |
614 | } else { | |
615 | bits |= BITS_STOP_1; | |
616 | dbg("%s - stop bits = 1", __FUNCTION__); | |
617 | } | |
39a66b8d | 618 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
619 | dev_err(&port->dev, "Number of stop bits requested " |
620 | "not supported by device\n"); | |
621 | } | |
39a66b8d CS |
622 | |
623 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
624 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
625 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
626 | __FUNCTION__, modem_ctl[0], modem_ctl[1], | |
627 | modem_ctl[2], modem_ctl[3]); | |
628 | ||
629 | if (cflag & CRTSCTS) { | |
630 | modem_ctl[0] &= ~0x7B; | |
631 | modem_ctl[0] |= 0x09; | |
632 | modem_ctl[1] = 0x80; | |
633 | dbg("%s - flow control = CRTSCTS", __FUNCTION__); | |
634 | } else { | |
635 | modem_ctl[0] &= ~0x7B; | |
636 | modem_ctl[0] |= 0x01; | |
637 | modem_ctl[1] |= 0x40; | |
638 | dbg("%s - flow control = NONE", __FUNCTION__); | |
639 | } | |
640 | ||
641 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
642 | __FUNCTION__, modem_ctl[0], modem_ctl[1], | |
643 | modem_ctl[2], modem_ctl[3]); | |
644 | cp2101_set_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
645 | } | |
646 | ||
647 | } | |
648 | ||
649 | static int cp2101_tiocmset (struct usb_serial_port *port, struct file *file, | |
650 | unsigned int set, unsigned int clear) | |
651 | { | |
652 | int control = 0; | |
653 | ||
654 | dbg("%s - port %d", __FUNCTION__, port->number); | |
655 | ||
656 | if (set & TIOCM_RTS) { | |
657 | control |= CONTROL_RTS; | |
658 | control |= CONTROL_WRITE_RTS; | |
659 | } | |
660 | if (set & TIOCM_DTR) { | |
661 | control |= CONTROL_DTR; | |
662 | control |= CONTROL_WRITE_DTR; | |
663 | } | |
664 | if (clear & TIOCM_RTS) { | |
665 | control &= ~CONTROL_RTS; | |
666 | control |= CONTROL_WRITE_RTS; | |
667 | } | |
668 | if (clear & TIOCM_DTR) { | |
669 | control &= ~CONTROL_DTR; | |
670 | control |= CONTROL_WRITE_DTR; | |
671 | } | |
672 | ||
673 | dbg("%s - control = 0x%.4x", __FUNCTION__, control); | |
674 | ||
675 | return cp2101_set_config(port, CP2101_CONTROL, &control, 2); | |
676 | ||
677 | } | |
678 | ||
679 | static int cp2101_tiocmget (struct usb_serial_port *port, struct file *file) | |
680 | { | |
681 | int control, result; | |
682 | ||
683 | dbg("%s - port %d", __FUNCTION__, port->number); | |
684 | ||
685 | cp2101_get_config(port, CP2101_CONTROL, &control, 1); | |
686 | ||
687 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
688 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
689 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
690 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
691 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
692 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
693 | ||
694 | dbg("%s - control = 0x%.2x", __FUNCTION__, control); | |
695 | ||
696 | return result; | |
1da177e4 LT |
697 | } |
698 | ||
699 | static void cp2101_break_ctl (struct usb_serial_port *port, int break_state) | |
700 | { | |
39a66b8d | 701 | int state; |
1da177e4 LT |
702 | |
703 | dbg("%s - port %d", __FUNCTION__, port->number); | |
704 | if (break_state == 0) | |
705 | state = BREAK_OFF; | |
706 | else | |
707 | state = BREAK_ON; | |
708 | dbg("%s - turning break %s", __FUNCTION__, | |
709 | state==BREAK_OFF ? "off" : "on"); | |
39a66b8d | 710 | cp2101_set_config(port, CP2101_BREAK, &state, 2); |
1da177e4 LT |
711 | } |
712 | ||
713 | static int cp2101_startup (struct usb_serial *serial) | |
714 | { | |
39a66b8d | 715 | /* CP2101 buffers behave strangely unless device is reset */ |
1da177e4 LT |
716 | usb_reset_device(serial->dev); |
717 | return 0; | |
718 | } | |
719 | ||
720 | static void cp2101_shutdown (struct usb_serial *serial) | |
721 | { | |
722 | int i; | |
723 | ||
724 | dbg("%s", __FUNCTION__); | |
725 | ||
39a66b8d | 726 | /* Stop reads and writes on all ports */ |
1da177e4 LT |
727 | for (i=0; i < serial->num_ports; ++i) { |
728 | cp2101_cleanup(serial->port[i]); | |
729 | } | |
730 | } | |
731 | ||
732 | static int __init cp2101_init (void) | |
733 | { | |
734 | int retval; | |
735 | ||
736 | retval = usb_serial_register(&cp2101_device); | |
737 | if (retval) | |
39a66b8d | 738 | return retval; /* Failed to register */ |
1da177e4 LT |
739 | |
740 | retval = usb_register(&cp2101_driver); | |
741 | if (retval) { | |
39a66b8d | 742 | /* Failed to register */ |
1da177e4 LT |
743 | usb_serial_deregister(&cp2101_device); |
744 | return retval; | |
745 | } | |
746 | ||
39a66b8d | 747 | /* Success */ |
1da177e4 LT |
748 | info(DRIVER_DESC " " DRIVER_VERSION); |
749 | return 0; | |
750 | } | |
751 | ||
752 | static void __exit cp2101_exit (void) | |
753 | { | |
754 | usb_deregister (&cp2101_driver); | |
755 | usb_serial_deregister (&cp2101_device); | |
756 | } | |
757 | ||
758 | module_init(cp2101_init); | |
759 | module_exit(cp2101_exit); | |
760 | ||
761 | MODULE_DESCRIPTION(DRIVER_DESC); | |
762 | MODULE_VERSION(DRIVER_VERSION); | |
763 | MODULE_LICENSE("GPL"); | |
764 | ||
765 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
766 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |