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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 | * | |
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> | |
ff7eb602 | 28 | #include <linux/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 | */ | |
95da310e AC |
40 | static int cp2101_open(struct tty_struct *, struct usb_serial_port *, |
41 | struct file *); | |
42 | static void cp2101_cleanup(struct usb_serial_port *); | |
43 | static void cp2101_close(struct tty_struct *, struct usb_serial_port *, | |
44 | struct file*); | |
45 | static void cp2101_get_termios(struct tty_struct *); | |
46 | static void cp2101_set_termios(struct tty_struct *, struct usb_serial_port *, | |
47 | struct ktermios*); | |
ff7eb602 AC |
48 | static int cp2101_tiocmget(struct tty_struct *, struct file *); |
49 | static int cp2101_tiocmset(struct tty_struct *, struct file *, | |
39a66b8d | 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 LT |
54 | |
55 | ||
56 | static int debug; | |
57 | ||
58 | static struct usb_device_id id_table [] = { | |
5091b587 | 59 | { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ |
59fba744 | 60 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
1f4f714f | 61 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
198b9517 | 62 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 63 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 64 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
198b9517 | 65 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
66 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
67 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
5de8b3ac | 68 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 69 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
92f5cae2 | 70 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 71 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 72 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
e988fc8a CS |
73 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
74 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 75 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 76 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 77 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 78 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
fc4bd64c JH |
79 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
80 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
e988fc8a | 81 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
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 */ |
e988fc8a | 93 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 94 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
5de8b3ac CS |
95 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
96 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
97 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
98 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 99 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
e05998d5 | 100 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
5de8b3ac | 101 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 102 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
ba0f332c | 103 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ |
39a66b8d | 104 | { } /* Terminating Entry */ |
1da177e4 LT |
105 | }; |
106 | ||
ff7eb602 | 107 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
108 | |
109 | static struct usb_driver cp2101_driver = { | |
269bda1c | 110 | .name = "cp2101", |
1da177e4 LT |
111 | .probe = usb_serial_probe, |
112 | .disconnect = usb_serial_disconnect, | |
113 | .id_table = id_table, | |
ba9dc657 | 114 | .no_dynamic_id = 1, |
1da177e4 LT |
115 | }; |
116 | ||
ea65370d | 117 | static struct usb_serial_driver cp2101_device = { |
18fcac35 GKH |
118 | .driver = { |
119 | .owner = THIS_MODULE, | |
269bda1c | 120 | .name = "cp2101", |
18fcac35 | 121 | }, |
d9b1b787 | 122 | .usb_driver = &cp2101_driver, |
1da177e4 | 123 | .id_table = id_table, |
1da177e4 LT |
124 | .num_ports = 1, |
125 | .open = cp2101_open, | |
126 | .close = cp2101_close, | |
127 | .break_ctl = cp2101_break_ctl, | |
128 | .set_termios = cp2101_set_termios, | |
39a66b8d CS |
129 | .tiocmget = cp2101_tiocmget, |
130 | .tiocmset = cp2101_tiocmset, | |
1da177e4 LT |
131 | .attach = cp2101_startup, |
132 | .shutdown = cp2101_shutdown, | |
133 | }; | |
134 | ||
39a66b8d | 135 | /* Config request types */ |
1da177e4 LT |
136 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
137 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
138 | ||
39a66b8d CS |
139 | /* Config SET requests. To GET, add 1 to the request number */ |
140 | #define CP2101_UART 0x00 /* Enable / Disable */ | |
141 | #define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */ | |
142 | #define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */ | |
143 | #define CP2101_BREAK 0x05 /* On / Off */ | |
144 | #define CP2101_CONTROL 0x07 /* Flow control line states */ | |
145 | #define CP2101_MODEMCTL 0x13 /* Modem controls */ | |
146 | #define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */ | |
1da177e4 | 147 | |
39a66b8d | 148 | /* CP2101_UART */ |
1da177e4 LT |
149 | #define UART_ENABLE 0x0001 |
150 | #define UART_DISABLE 0x0000 | |
151 | ||
39a66b8d | 152 | /* CP2101_BAUDRATE */ |
1da177e4 LT |
153 | #define BAUD_RATE_GEN_FREQ 0x384000 |
154 | ||
39a66b8d | 155 | /* CP2101_BITS */ |
1da177e4 | 156 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 157 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
158 | #define BITS_DATA_6 0X0600 |
159 | #define BITS_DATA_7 0X0700 | |
160 | #define BITS_DATA_8 0X0800 | |
161 | #define BITS_DATA_9 0X0900 | |
162 | ||
163 | #define BITS_PARITY_MASK 0x00f0 | |
164 | #define BITS_PARITY_NONE 0x0000 | |
165 | #define BITS_PARITY_ODD 0x0010 | |
166 | #define BITS_PARITY_EVEN 0x0020 | |
167 | #define BITS_PARITY_MARK 0x0030 | |
168 | #define BITS_PARITY_SPACE 0x0040 | |
169 | ||
170 | #define BITS_STOP_MASK 0x000f | |
171 | #define BITS_STOP_1 0x0000 | |
172 | #define BITS_STOP_1_5 0x0001 | |
173 | #define BITS_STOP_2 0x0002 | |
39a66b8d CS |
174 | |
175 | /* CP2101_BREAK */ | |
1da177e4 LT |
176 | #define BREAK_ON 0x0000 |
177 | #define BREAK_OFF 0x0001 | |
178 | ||
39a66b8d CS |
179 | /* CP2101_CONTROL */ |
180 | #define CONTROL_DTR 0x0001 | |
181 | #define CONTROL_RTS 0x0002 | |
182 | #define CONTROL_CTS 0x0010 | |
183 | #define CONTROL_DSR 0x0020 | |
184 | #define CONTROL_RING 0x0040 | |
185 | #define CONTROL_DCD 0x0080 | |
186 | #define CONTROL_WRITE_DTR 0x0100 | |
187 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 188 | |
39a66b8d CS |
189 | /* |
190 | * cp2101_get_config | |
191 | * Reads from the CP2101 configuration registers | |
192 | * 'size' is specified in bytes. | |
193 | * 'data' is a pointer to a pre-allocated array of integers large | |
194 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
195 | */ | |
95da310e | 196 | static int cp2101_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 197 | unsigned int *data, int size) |
1da177e4 LT |
198 | { |
199 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 200 | __le32 *buf; |
39a66b8d CS |
201 | int result, i, length; |
202 | ||
203 | /* Number of integers required to contain the array */ | |
204 | length = (((size - 1) | 3) + 1)/4; | |
205 | ||
53ebb3b8 | 206 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 207 | if (!buf) { |
441b62c1 | 208 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
209 | return -ENOMEM; |
210 | } | |
1da177e4 | 211 | |
39a66b8d | 212 | /* For get requests, the request number must be incremented */ |
1da177e4 LT |
213 | request++; |
214 | ||
39a66b8d | 215 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 216 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 217 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 218 | 0, buf, size, 300); |
1da177e4 | 219 | |
39a66b8d | 220 | /* Convert data into an array of integers */ |
ff7eb602 | 221 | for (i = 0; i < length; i++) |
39a66b8d | 222 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 223 | |
39a66b8d | 224 | kfree(buf); |
1da177e4 | 225 | |
39a66b8d CS |
226 | if (result != size) { |
227 | dev_err(&port->dev, "%s - Unable to send config request, " | |
228 | "request=0x%x size=%d result=%d\n", | |
441b62c1 | 229 | __func__, request, size, result); |
39a66b8d CS |
230 | return -EPROTO; |
231 | } | |
1da177e4 | 232 | |
39a66b8d | 233 | return 0; |
1da177e4 LT |
234 | } |
235 | ||
39a66b8d CS |
236 | /* |
237 | * cp2101_set_config | |
238 | * Writes to the CP2101 configuration registers | |
239 | * Values less than 16 bits wide are sent directly | |
240 | * 'size' is specified in bytes. | |
241 | */ | |
95da310e | 242 | static int cp2101_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 243 | unsigned int *data, int size) |
1da177e4 LT |
244 | { |
245 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 246 | __le32 *buf; |
39a66b8d | 247 | int result, i, length; |
1da177e4 | 248 | |
39a66b8d CS |
249 | /* Number of integers required to contain the array */ |
250 | length = (((size - 1) | 3) + 1)/4; | |
251 | ||
53ebb3b8 | 252 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
253 | if (!buf) { |
254 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 255 | __func__); |
39a66b8d CS |
256 | return -ENOMEM; |
257 | } | |
258 | ||
259 | /* Array of integers into bytes */ | |
260 | for (i = 0; i < length; i++) | |
261 | buf[i] = cpu_to_le32(data[i]); | |
262 | ||
263 | if (size > 2) { | |
ff7eb602 | 264 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
265 | usb_sndctrlpipe(serial->dev, 0), |
266 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
267 | 0, buf, size, 300); | |
268 | } else { | |
ff7eb602 | 269 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
270 | usb_sndctrlpipe(serial->dev, 0), |
271 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
272 | 0, NULL, 0, 300); | |
1da177e4 LT |
273 | } |
274 | ||
39a66b8d CS |
275 | kfree(buf); |
276 | ||
277 | if ((size > 2 && result != size) || result < 0) { | |
278 | dev_err(&port->dev, "%s - Unable to send request, " | |
279 | "request=0x%x size=%d result=%d\n", | |
441b62c1 | 280 | __func__, request, size, result); |
39a66b8d CS |
281 | return -EPROTO; |
282 | } | |
1da177e4 | 283 | |
39a66b8d | 284 | /* Single data value */ |
ff7eb602 | 285 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
286 | usb_sndctrlpipe(serial->dev, 0), |
287 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
288 | 0, NULL, 0, 300); | |
1da177e4 LT |
289 | return 0; |
290 | } | |
291 | ||
39a66b8d CS |
292 | /* |
293 | * cp2101_set_config_single | |
294 | * Convenience function for calling cp2101_set_config on single data values | |
295 | * without requiring an integer pointer | |
296 | */ | |
95da310e | 297 | static inline int cp2101_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
298 | u8 request, unsigned int data) |
299 | { | |
300 | return cp2101_set_config(port, request, &data, 2); | |
301 | } | |
302 | ||
ff7eb602 | 303 | static int cp2101_open(struct tty_struct *tty, struct usb_serial_port *port, |
95da310e | 304 | struct file *filp) |
1da177e4 LT |
305 | { |
306 | struct usb_serial *serial = port->serial; | |
307 | int result; | |
308 | ||
441b62c1 | 309 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 310 | |
39a66b8d | 311 | if (cp2101_set_config_single(port, CP2101_UART, UART_ENABLE)) { |
1da177e4 | 312 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
441b62c1 | 313 | __func__); |
1da177e4 LT |
314 | return -EPROTO; |
315 | } | |
316 | ||
317 | /* Start reading from the device */ | |
ff7eb602 | 318 | usb_fill_bulk_urb(port->read_urb, serial->dev, |
1da177e4 LT |
319 | usb_rcvbulkpipe(serial->dev, |
320 | port->bulk_in_endpointAddress), | |
321 | port->read_urb->transfer_buffer, | |
322 | port->read_urb->transfer_buffer_length, | |
323 | serial->type->read_bulk_callback, | |
324 | port); | |
325 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
326 | if (result) { | |
327 | dev_err(&port->dev, "%s - failed resubmitting read urb, " | |
441b62c1 | 328 | "error %d\n", __func__, result); |
1da177e4 LT |
329 | return result; |
330 | } | |
331 | ||
39a66b8d | 332 | /* Configure the termios structure */ |
95da310e | 333 | cp2101_get_termios(tty); |
1da177e4 | 334 | |
39a66b8d | 335 | /* Set the DTR and RTS pins low */ |
95da310e | 336 | cp2101_tiocmset(tty, NULL, TIOCM_DTR | TIOCM_RTS, 0); |
39a66b8d | 337 | |
1da177e4 LT |
338 | return 0; |
339 | } | |
340 | ||
ff7eb602 | 341 | static void cp2101_cleanup(struct usb_serial_port *port) |
1da177e4 LT |
342 | { |
343 | struct usb_serial *serial = port->serial; | |
344 | ||
441b62c1 | 345 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
346 | |
347 | if (serial->dev) { | |
348 | /* shutdown any bulk reads that might be going on */ | |
349 | if (serial->num_bulk_out) | |
350 | usb_kill_urb(port->write_urb); | |
351 | if (serial->num_bulk_in) | |
352 | usb_kill_urb(port->read_urb); | |
353 | } | |
354 | } | |
355 | ||
95da310e | 356 | static void cp2101_close(struct tty_struct *tty, struct usb_serial_port *port, |
ff7eb602 | 357 | struct file *filp) |
1da177e4 | 358 | { |
441b62c1 | 359 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
360 | |
361 | /* shutdown our urbs */ | |
441b62c1 | 362 | dbg("%s - shutting down urbs", __func__); |
1da177e4 LT |
363 | usb_kill_urb(port->write_urb); |
364 | usb_kill_urb(port->read_urb); | |
365 | ||
95bef012 ON |
366 | mutex_lock(&port->serial->disc_mutex); |
367 | if (!port->serial->disconnected) | |
368 | cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); | |
369 | mutex_unlock(&port->serial->disc_mutex); | |
1da177e4 LT |
370 | } |
371 | ||
39a66b8d CS |
372 | /* |
373 | * cp2101_get_termios | |
374 | * Reads the baud rate, data bits, parity, stop bits and flow control mode | |
375 | * from the device, corrects any unsupported values, and configures the | |
376 | * termios structure to reflect the state of the device | |
377 | */ | |
95da310e | 378 | static void cp2101_get_termios (struct tty_struct *tty) |
1da177e4 | 379 | { |
95da310e | 380 | struct usb_serial_port *port = tty->driver_data; |
39a66b8d | 381 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
382 | unsigned int baud; |
383 | unsigned int bits; | |
1da177e4 | 384 | |
441b62c1 | 385 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 386 | |
39a66b8d CS |
387 | cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2); |
388 | /* Convert to baudrate */ | |
1da177e4 LT |
389 | if (baud) |
390 | baud = BAUD_RATE_GEN_FREQ / baud; | |
391 | ||
441b62c1 | 392 | dbg("%s - baud rate = %d", __func__, baud); |
9ab0f202 | 393 | |
95da310e AC |
394 | tty_encode_baud_rate(tty, baud, baud); |
395 | cflag = tty->termios->c_cflag; | |
1da177e4 | 396 | |
39a66b8d | 397 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 | 398 | cflag &= ~CSIZE; |
ff7eb602 AC |
399 | switch (bits & BITS_DATA_MASK) { |
400 | case BITS_DATA_5: | |
401 | dbg("%s - data bits = 5", __func__); | |
402 | cflag |= CS5; | |
403 | break; | |
404 | case BITS_DATA_6: | |
405 | dbg("%s - data bits = 6", __func__); | |
406 | cflag |= CS6; | |
407 | break; | |
408 | case BITS_DATA_7: | |
409 | dbg("%s - data bits = 7", __func__); | |
410 | cflag |= CS7; | |
411 | break; | |
412 | case BITS_DATA_8: | |
413 | dbg("%s - data bits = 8", __func__); | |
414 | cflag |= CS8; | |
415 | break; | |
416 | case BITS_DATA_9: | |
417 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
418 | __func__); | |
419 | cflag |= CS8; | |
420 | bits &= ~BITS_DATA_MASK; | |
421 | bits |= BITS_DATA_8; | |
422 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
423 | break; | |
424 | default: | |
425 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
426 | cflag |= CS8; | |
427 | bits &= ~BITS_DATA_MASK; | |
428 | bits |= BITS_DATA_8; | |
429 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
430 | break; | |
1da177e4 LT |
431 | } |
432 | ||
ff7eb602 AC |
433 | switch (bits & BITS_PARITY_MASK) { |
434 | case BITS_PARITY_NONE: | |
435 | dbg("%s - parity = NONE", __func__); | |
436 | cflag &= ~PARENB; | |
437 | break; | |
438 | case BITS_PARITY_ODD: | |
439 | dbg("%s - parity = ODD", __func__); | |
440 | cflag |= (PARENB|PARODD); | |
441 | break; | |
442 | case BITS_PARITY_EVEN: | |
443 | dbg("%s - parity = EVEN", __func__); | |
444 | cflag &= ~PARODD; | |
445 | cflag |= PARENB; | |
446 | break; | |
447 | case BITS_PARITY_MARK: | |
448 | dbg("%s - parity = MARK (not supported, disabling parity)", | |
449 | __func__); | |
450 | cflag &= ~PARENB; | |
451 | bits &= ~BITS_PARITY_MASK; | |
452 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
453 | break; | |
454 | case BITS_PARITY_SPACE: | |
455 | dbg("%s - parity = SPACE (not supported, disabling parity)", | |
456 | __func__); | |
457 | cflag &= ~PARENB; | |
458 | bits &= ~BITS_PARITY_MASK; | |
459 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
460 | break; | |
461 | default: | |
462 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
463 | cflag &= ~PARENB; | |
464 | bits &= ~BITS_PARITY_MASK; | |
465 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
466 | break; | |
1da177e4 LT |
467 | } |
468 | ||
469 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
470 | switch (bits & BITS_STOP_MASK) { |
471 | case BITS_STOP_1: | |
472 | dbg("%s - stop bits = 1", __func__); | |
473 | break; | |
474 | case BITS_STOP_1_5: | |
475 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
476 | __func__); | |
477 | bits &= ~BITS_STOP_MASK; | |
478 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
479 | break; | |
480 | case BITS_STOP_2: | |
481 | dbg("%s - stop bits = 2", __func__); | |
482 | cflag |= CSTOPB; | |
483 | break; | |
484 | default: | |
485 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
486 | __func__); | |
487 | bits &= ~BITS_STOP_MASK; | |
488 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
489 | break; | |
1da177e4 LT |
490 | } |
491 | ||
39a66b8d CS |
492 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); |
493 | if (modem_ctl[0] & 0x0008) { | |
441b62c1 | 494 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
495 | cflag |= CRTSCTS; |
496 | } else { | |
441b62c1 | 497 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
498 | cflag &= ~CRTSCTS; |
499 | } | |
500 | ||
95da310e | 501 | tty->termios->c_cflag = cflag; |
1da177e4 LT |
502 | } |
503 | ||
ff7eb602 | 504 | static void cp2101_set_termios(struct tty_struct *tty, |
95da310e | 505 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 506 | { |
9ab0f202 | 507 | unsigned int cflag, old_cflag; |
b2bdd1f5 | 508 | unsigned int baud = 0, bits; |
39a66b8d | 509 | unsigned int modem_ctl[4]; |
1da177e4 | 510 | |
441b62c1 | 511 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 512 | |
95da310e | 513 | if (!tty) |
1da177e4 | 514 | return; |
9ab0f202 | 515 | |
95da310e AC |
516 | tty->termios->c_cflag &= ~CMSPAR; |
517 | cflag = tty->termios->c_cflag; | |
01e96d28 | 518 | old_cflag = old_termios->c_cflag; |
95da310e | 519 | baud = tty_get_baud_rate(tty); |
1da177e4 LT |
520 | |
521 | /* If the baud rate is to be updated*/ | |
01e96d28 AC |
522 | if (baud != tty_termios_baud_rate(old_termios)) { |
523 | switch (baud) { | |
ff7eb602 AC |
524 | case 0: |
525 | case 600: | |
526 | case 1200: | |
527 | case 1800: | |
528 | case 2400: | |
529 | case 4800: | |
530 | case 7200: | |
531 | case 9600: | |
532 | case 14400: | |
533 | case 19200: | |
534 | case 28800: | |
535 | case 38400: | |
536 | case 55854: | |
537 | case 57600: | |
538 | case 115200: | |
539 | case 127117: | |
540 | case 230400: | |
541 | case 460800: | |
542 | case 921600: | |
543 | case 3686400: | |
544 | break; | |
545 | default: | |
546 | baud = 9600; | |
547 | break; | |
1da177e4 LT |
548 | } |
549 | ||
550 | if (baud) { | |
441b62c1 | 551 | dbg("%s - Setting baud rate to %d baud", __func__, |
1da177e4 | 552 | baud); |
39a66b8d | 553 | if (cp2101_set_config_single(port, CP2101_BAUDRATE, |
9ab0f202 | 554 | (BAUD_RATE_GEN_FREQ / baud))) { |
1da177e4 LT |
555 | dev_err(&port->dev, "Baud rate requested not " |
556 | "supported by device\n"); | |
9ab0f202 AC |
557 | baud = tty_termios_baud_rate(old_termios); |
558 | } | |
1da177e4 LT |
559 | } |
560 | } | |
9ab0f202 | 561 | /* Report back the resulting baud rate */ |
95da310e | 562 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 | 563 | |
39a66b8d | 564 | /* If the number of data bits is to be updated */ |
1da177e4 | 565 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
39a66b8d | 566 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
567 | bits &= ~BITS_DATA_MASK; |
568 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
569 | case CS5: |
570 | bits |= BITS_DATA_5; | |
571 | dbg("%s - data bits = 5", __func__); | |
572 | break; | |
573 | case CS6: | |
574 | bits |= BITS_DATA_6; | |
575 | dbg("%s - data bits = 6", __func__); | |
576 | break; | |
577 | case CS7: | |
578 | bits |= BITS_DATA_7; | |
579 | dbg("%s - data bits = 7", __func__); | |
580 | break; | |
581 | case CS8: | |
582 | bits |= BITS_DATA_8; | |
583 | dbg("%s - data bits = 8", __func__); | |
584 | break; | |
585 | /*case CS9: | |
586 | bits |= BITS_DATA_9; | |
587 | dbg("%s - data bits = 9", __func__); | |
588 | break;*/ | |
589 | default: | |
590 | dev_err(&port->dev, "cp2101 driver does not " | |
1da177e4 LT |
591 | "support the number of bits requested," |
592 | " using 8 bit mode\n"); | |
593 | bits |= BITS_DATA_8; | |
594 | break; | |
595 | } | |
39a66b8d | 596 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
597 | dev_err(&port->dev, "Number of data bits requested " |
598 | "not supported by device\n"); | |
599 | } | |
600 | ||
601 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
39a66b8d | 602 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
603 | bits &= ~BITS_PARITY_MASK; |
604 | if (cflag & PARENB) { | |
605 | if (cflag & PARODD) { | |
606 | bits |= BITS_PARITY_ODD; | |
441b62c1 | 607 | dbg("%s - parity = ODD", __func__); |
1da177e4 LT |
608 | } else { |
609 | bits |= BITS_PARITY_EVEN; | |
441b62c1 | 610 | dbg("%s - parity = EVEN", __func__); |
1da177e4 LT |
611 | } |
612 | } | |
39a66b8d | 613 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
614 | dev_err(&port->dev, "Parity mode not supported " |
615 | "by device\n"); | |
616 | } | |
617 | ||
618 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
39a66b8d | 619 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
620 | bits &= ~BITS_STOP_MASK; |
621 | if (cflag & CSTOPB) { | |
622 | bits |= BITS_STOP_2; | |
441b62c1 | 623 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
624 | } else { |
625 | bits |= BITS_STOP_1; | |
441b62c1 | 626 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 627 | } |
39a66b8d | 628 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
629 | dev_err(&port->dev, "Number of stop bits requested " |
630 | "not supported by device\n"); | |
631 | } | |
39a66b8d CS |
632 | |
633 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
634 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
635 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 636 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
637 | modem_ctl[2], modem_ctl[3]); |
638 | ||
639 | if (cflag & CRTSCTS) { | |
640 | modem_ctl[0] &= ~0x7B; | |
641 | modem_ctl[0] |= 0x09; | |
642 | modem_ctl[1] = 0x80; | |
441b62c1 | 643 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
644 | } else { |
645 | modem_ctl[0] &= ~0x7B; | |
646 | modem_ctl[0] |= 0x01; | |
647 | modem_ctl[1] |= 0x40; | |
441b62c1 | 648 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
649 | } |
650 | ||
651 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 652 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
653 | modem_ctl[2], modem_ctl[3]); |
654 | cp2101_set_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
655 | } | |
656 | ||
657 | } | |
658 | ||
95da310e | 659 | static int cp2101_tiocmset (struct tty_struct *tty, struct file *file, |
39a66b8d CS |
660 | unsigned int set, unsigned int clear) |
661 | { | |
95da310e | 662 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 663 | unsigned int control = 0; |
39a66b8d | 664 | |
441b62c1 | 665 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
666 | |
667 | if (set & TIOCM_RTS) { | |
668 | control |= CONTROL_RTS; | |
669 | control |= CONTROL_WRITE_RTS; | |
670 | } | |
671 | if (set & TIOCM_DTR) { | |
672 | control |= CONTROL_DTR; | |
673 | control |= CONTROL_WRITE_DTR; | |
674 | } | |
675 | if (clear & TIOCM_RTS) { | |
676 | control &= ~CONTROL_RTS; | |
677 | control |= CONTROL_WRITE_RTS; | |
678 | } | |
679 | if (clear & TIOCM_DTR) { | |
680 | control &= ~CONTROL_DTR; | |
681 | control |= CONTROL_WRITE_DTR; | |
682 | } | |
683 | ||
441b62c1 | 684 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d CS |
685 | |
686 | return cp2101_set_config(port, CP2101_CONTROL, &control, 2); | |
687 | ||
688 | } | |
689 | ||
95da310e | 690 | static int cp2101_tiocmget (struct tty_struct *tty, struct file *file) |
39a66b8d | 691 | { |
95da310e | 692 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
693 | unsigned int control; |
694 | int result; | |
39a66b8d | 695 | |
441b62c1 | 696 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
697 | |
698 | cp2101_get_config(port, CP2101_CONTROL, &control, 1); | |
699 | ||
700 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
701 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
702 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
703 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
704 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
705 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
706 | ||
441b62c1 | 707 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
708 | |
709 | return result; | |
1da177e4 LT |
710 | } |
711 | ||
95da310e | 712 | static void cp2101_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 713 | { |
95da310e | 714 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 715 | unsigned int state; |
1da177e4 | 716 | |
441b62c1 | 717 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
718 | if (break_state == 0) |
719 | state = BREAK_OFF; | |
720 | else | |
721 | state = BREAK_ON; | |
441b62c1 | 722 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 723 | state == BREAK_OFF ? "off" : "on"); |
39a66b8d | 724 | cp2101_set_config(port, CP2101_BREAK, &state, 2); |
1da177e4 LT |
725 | } |
726 | ||
ff7eb602 | 727 | static int cp2101_startup(struct usb_serial *serial) |
1da177e4 | 728 | { |
39a66b8d | 729 | /* CP2101 buffers behave strangely unless device is reset */ |
1da177e4 LT |
730 | usb_reset_device(serial->dev); |
731 | return 0; | |
732 | } | |
733 | ||
ff7eb602 | 734 | static void cp2101_shutdown(struct usb_serial *serial) |
1da177e4 LT |
735 | { |
736 | int i; | |
737 | ||
441b62c1 | 738 | dbg("%s", __func__); |
1da177e4 | 739 | |
39a66b8d | 740 | /* Stop reads and writes on all ports */ |
ff7eb602 | 741 | for (i = 0; i < serial->num_ports; ++i) |
1da177e4 | 742 | cp2101_cleanup(serial->port[i]); |
1da177e4 LT |
743 | } |
744 | ||
ff7eb602 | 745 | static int __init cp2101_init(void) |
1da177e4 LT |
746 | { |
747 | int retval; | |
748 | ||
749 | retval = usb_serial_register(&cp2101_device); | |
750 | if (retval) | |
39a66b8d | 751 | return retval; /* Failed to register */ |
1da177e4 LT |
752 | |
753 | retval = usb_register(&cp2101_driver); | |
754 | if (retval) { | |
39a66b8d | 755 | /* Failed to register */ |
1da177e4 LT |
756 | usb_serial_deregister(&cp2101_device); |
757 | return retval; | |
758 | } | |
759 | ||
39a66b8d | 760 | /* Success */ |
c197a8db GKH |
761 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
762 | DRIVER_DESC "\n"); | |
1da177e4 LT |
763 | return 0; |
764 | } | |
765 | ||
ff7eb602 | 766 | static void __exit cp2101_exit(void) |
1da177e4 | 767 | { |
ff7eb602 AC |
768 | usb_deregister(&cp2101_driver); |
769 | usb_serial_deregister(&cp2101_device); | |
1da177e4 LT |
770 | } |
771 | ||
772 | module_init(cp2101_init); | |
773 | module_exit(cp2101_exit); | |
774 | ||
775 | MODULE_DESCRIPTION(DRIVER_DESC); | |
776 | MODULE_VERSION(DRIVER_VERSION); | |
777 | MODULE_LICENSE("GPL"); | |
778 | ||
779 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
780 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |