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