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> | |
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 [] = { | |
59fba744 | 59 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
1f4f714f | 60 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
198b9517 | 61 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 62 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 63 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
198b9517 | 64 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
65 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
66 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
5de8b3ac | 67 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 68 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
92f5cae2 | 69 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
212a4b4e | 70 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
e988fc8a CS |
71 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
72 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 73 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 74 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 75 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 76 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
fc4bd64c JH |
77 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
78 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
e988fc8a | 79 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
96623697 | 80 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
59fba744 | 81 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
78001e3d BS |
82 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
83 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 84 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
78001e3d | 85 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
e8898681 | 86 | { USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */ |
ba0f332c | 87 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
e988fc8a | 88 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 89 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
5de8b3ac CS |
90 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
91 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
92 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
93 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 94 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
e05998d5 | 95 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
5de8b3ac | 96 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 97 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
ba0f332c | 98 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ |
39a66b8d | 99 | { } /* Terminating Entry */ |
1da177e4 LT |
100 | }; |
101 | ||
ff7eb602 | 102 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
103 | |
104 | static struct usb_driver cp2101_driver = { | |
269bda1c | 105 | .name = "cp2101", |
1da177e4 LT |
106 | .probe = usb_serial_probe, |
107 | .disconnect = usb_serial_disconnect, | |
108 | .id_table = id_table, | |
ba9dc657 | 109 | .no_dynamic_id = 1, |
1da177e4 LT |
110 | }; |
111 | ||
ea65370d | 112 | static struct usb_serial_driver cp2101_device = { |
18fcac35 GKH |
113 | .driver = { |
114 | .owner = THIS_MODULE, | |
269bda1c | 115 | .name = "cp2101", |
18fcac35 | 116 | }, |
d9b1b787 | 117 | .usb_driver = &cp2101_driver, |
1da177e4 | 118 | .id_table = id_table, |
1da177e4 LT |
119 | .num_ports = 1, |
120 | .open = cp2101_open, | |
121 | .close = cp2101_close, | |
122 | .break_ctl = cp2101_break_ctl, | |
123 | .set_termios = cp2101_set_termios, | |
39a66b8d CS |
124 | .tiocmget = cp2101_tiocmget, |
125 | .tiocmset = cp2101_tiocmset, | |
1da177e4 LT |
126 | .attach = cp2101_startup, |
127 | .shutdown = cp2101_shutdown, | |
128 | }; | |
129 | ||
39a66b8d | 130 | /* Config request types */ |
1da177e4 LT |
131 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
132 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
133 | ||
39a66b8d CS |
134 | /* Config SET requests. To GET, add 1 to the request number */ |
135 | #define CP2101_UART 0x00 /* Enable / Disable */ | |
136 | #define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */ | |
137 | #define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */ | |
138 | #define CP2101_BREAK 0x05 /* On / Off */ | |
139 | #define CP2101_CONTROL 0x07 /* Flow control line states */ | |
140 | #define CP2101_MODEMCTL 0x13 /* Modem controls */ | |
141 | #define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */ | |
1da177e4 | 142 | |
39a66b8d | 143 | /* CP2101_UART */ |
1da177e4 LT |
144 | #define UART_ENABLE 0x0001 |
145 | #define UART_DISABLE 0x0000 | |
146 | ||
39a66b8d | 147 | /* CP2101_BAUDRATE */ |
1da177e4 LT |
148 | #define BAUD_RATE_GEN_FREQ 0x384000 |
149 | ||
39a66b8d | 150 | /* CP2101_BITS */ |
1da177e4 | 151 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 152 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
153 | #define BITS_DATA_6 0X0600 |
154 | #define BITS_DATA_7 0X0700 | |
155 | #define BITS_DATA_8 0X0800 | |
156 | #define BITS_DATA_9 0X0900 | |
157 | ||
158 | #define BITS_PARITY_MASK 0x00f0 | |
159 | #define BITS_PARITY_NONE 0x0000 | |
160 | #define BITS_PARITY_ODD 0x0010 | |
161 | #define BITS_PARITY_EVEN 0x0020 | |
162 | #define BITS_PARITY_MARK 0x0030 | |
163 | #define BITS_PARITY_SPACE 0x0040 | |
164 | ||
165 | #define BITS_STOP_MASK 0x000f | |
166 | #define BITS_STOP_1 0x0000 | |
167 | #define BITS_STOP_1_5 0x0001 | |
168 | #define BITS_STOP_2 0x0002 | |
39a66b8d CS |
169 | |
170 | /* CP2101_BREAK */ | |
1da177e4 LT |
171 | #define BREAK_ON 0x0000 |
172 | #define BREAK_OFF 0x0001 | |
173 | ||
39a66b8d CS |
174 | /* CP2101_CONTROL */ |
175 | #define CONTROL_DTR 0x0001 | |
176 | #define CONTROL_RTS 0x0002 | |
177 | #define CONTROL_CTS 0x0010 | |
178 | #define CONTROL_DSR 0x0020 | |
179 | #define CONTROL_RING 0x0040 | |
180 | #define CONTROL_DCD 0x0080 | |
181 | #define CONTROL_WRITE_DTR 0x0100 | |
182 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 183 | |
39a66b8d CS |
184 | /* |
185 | * cp2101_get_config | |
186 | * Reads from the CP2101 configuration registers | |
187 | * 'size' is specified in bytes. | |
188 | * 'data' is a pointer to a pre-allocated array of integers large | |
189 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
190 | */ | |
95da310e | 191 | static int cp2101_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 192 | unsigned int *data, int size) |
1da177e4 LT |
193 | { |
194 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 195 | __le32 *buf; |
39a66b8d CS |
196 | int result, i, length; |
197 | ||
198 | /* Number of integers required to contain the array */ | |
199 | length = (((size - 1) | 3) + 1)/4; | |
200 | ||
53ebb3b8 | 201 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 202 | if (!buf) { |
441b62c1 | 203 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
204 | return -ENOMEM; |
205 | } | |
1da177e4 | 206 | |
39a66b8d | 207 | /* For get requests, the request number must be incremented */ |
1da177e4 LT |
208 | request++; |
209 | ||
39a66b8d | 210 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 211 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 212 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 213 | 0, buf, size, 300); |
1da177e4 | 214 | |
39a66b8d | 215 | /* Convert data into an array of integers */ |
ff7eb602 | 216 | for (i = 0; i < length; i++) |
39a66b8d | 217 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 218 | |
39a66b8d | 219 | kfree(buf); |
1da177e4 | 220 | |
39a66b8d CS |
221 | if (result != size) { |
222 | dev_err(&port->dev, "%s - Unable to send config request, " | |
223 | "request=0x%x size=%d result=%d\n", | |
441b62c1 | 224 | __func__, request, size, result); |
39a66b8d CS |
225 | return -EPROTO; |
226 | } | |
1da177e4 | 227 | |
39a66b8d | 228 | return 0; |
1da177e4 LT |
229 | } |
230 | ||
39a66b8d CS |
231 | /* |
232 | * cp2101_set_config | |
233 | * Writes to the CP2101 configuration registers | |
234 | * Values less than 16 bits wide are sent directly | |
235 | * 'size' is specified in bytes. | |
236 | */ | |
95da310e | 237 | static int cp2101_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 238 | unsigned int *data, int size) |
1da177e4 LT |
239 | { |
240 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 241 | __le32 *buf; |
39a66b8d | 242 | int result, i, length; |
1da177e4 | 243 | |
39a66b8d CS |
244 | /* Number of integers required to contain the array */ |
245 | length = (((size - 1) | 3) + 1)/4; | |
246 | ||
53ebb3b8 | 247 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
248 | if (!buf) { |
249 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 250 | __func__); |
39a66b8d CS |
251 | return -ENOMEM; |
252 | } | |
253 | ||
254 | /* Array of integers into bytes */ | |
255 | for (i = 0; i < length; i++) | |
256 | buf[i] = cpu_to_le32(data[i]); | |
257 | ||
258 | if (size > 2) { | |
ff7eb602 | 259 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
260 | usb_sndctrlpipe(serial->dev, 0), |
261 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
262 | 0, buf, size, 300); | |
263 | } else { | |
ff7eb602 | 264 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
265 | usb_sndctrlpipe(serial->dev, 0), |
266 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
267 | 0, NULL, 0, 300); | |
1da177e4 LT |
268 | } |
269 | ||
39a66b8d CS |
270 | kfree(buf); |
271 | ||
272 | if ((size > 2 && result != size) || result < 0) { | |
273 | dev_err(&port->dev, "%s - Unable to send request, " | |
274 | "request=0x%x size=%d result=%d\n", | |
441b62c1 | 275 | __func__, request, size, result); |
39a66b8d CS |
276 | return -EPROTO; |
277 | } | |
1da177e4 | 278 | |
39a66b8d | 279 | /* Single data value */ |
ff7eb602 | 280 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
281 | usb_sndctrlpipe(serial->dev, 0), |
282 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
283 | 0, NULL, 0, 300); | |
1da177e4 LT |
284 | return 0; |
285 | } | |
286 | ||
39a66b8d CS |
287 | /* |
288 | * cp2101_set_config_single | |
289 | * Convenience function for calling cp2101_set_config on single data values | |
290 | * without requiring an integer pointer | |
291 | */ | |
95da310e | 292 | static inline int cp2101_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
293 | u8 request, unsigned int data) |
294 | { | |
295 | return cp2101_set_config(port, request, &data, 2); | |
296 | } | |
297 | ||
ff7eb602 | 298 | static int cp2101_open(struct tty_struct *tty, struct usb_serial_port *port, |
95da310e | 299 | struct file *filp) |
1da177e4 LT |
300 | { |
301 | struct usb_serial *serial = port->serial; | |
302 | int result; | |
303 | ||
441b62c1 | 304 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 305 | |
39a66b8d | 306 | if (cp2101_set_config_single(port, CP2101_UART, UART_ENABLE)) { |
1da177e4 | 307 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
441b62c1 | 308 | __func__); |
1da177e4 LT |
309 | return -EPROTO; |
310 | } | |
311 | ||
312 | /* Start reading from the device */ | |
ff7eb602 | 313 | usb_fill_bulk_urb(port->read_urb, serial->dev, |
1da177e4 LT |
314 | usb_rcvbulkpipe(serial->dev, |
315 | port->bulk_in_endpointAddress), | |
316 | port->read_urb->transfer_buffer, | |
317 | port->read_urb->transfer_buffer_length, | |
318 | serial->type->read_bulk_callback, | |
319 | port); | |
320 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
321 | if (result) { | |
322 | dev_err(&port->dev, "%s - failed resubmitting read urb, " | |
441b62c1 | 323 | "error %d\n", __func__, result); |
1da177e4 LT |
324 | return result; |
325 | } | |
326 | ||
39a66b8d | 327 | /* Configure the termios structure */ |
95da310e | 328 | cp2101_get_termios(tty); |
1da177e4 | 329 | |
39a66b8d | 330 | /* Set the DTR and RTS pins low */ |
95da310e | 331 | cp2101_tiocmset(tty, NULL, TIOCM_DTR | TIOCM_RTS, 0); |
39a66b8d | 332 | |
1da177e4 LT |
333 | return 0; |
334 | } | |
335 | ||
ff7eb602 | 336 | static void cp2101_cleanup(struct usb_serial_port *port) |
1da177e4 LT |
337 | { |
338 | struct usb_serial *serial = port->serial; | |
339 | ||
441b62c1 | 340 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
341 | |
342 | if (serial->dev) { | |
343 | /* shutdown any bulk reads that might be going on */ | |
344 | if (serial->num_bulk_out) | |
345 | usb_kill_urb(port->write_urb); | |
346 | if (serial->num_bulk_in) | |
347 | usb_kill_urb(port->read_urb); | |
348 | } | |
349 | } | |
350 | ||
95da310e | 351 | static void cp2101_close(struct tty_struct *tty, struct usb_serial_port *port, |
ff7eb602 | 352 | struct file *filp) |
1da177e4 | 353 | { |
441b62c1 | 354 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
355 | |
356 | /* shutdown our urbs */ | |
441b62c1 | 357 | dbg("%s - shutting down urbs", __func__); |
1da177e4 LT |
358 | usb_kill_urb(port->write_urb); |
359 | usb_kill_urb(port->read_urb); | |
360 | ||
95bef012 ON |
361 | mutex_lock(&port->serial->disc_mutex); |
362 | if (!port->serial->disconnected) | |
363 | cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); | |
364 | mutex_unlock(&port->serial->disc_mutex); | |
1da177e4 LT |
365 | } |
366 | ||
39a66b8d CS |
367 | /* |
368 | * cp2101_get_termios | |
369 | * Reads the baud rate, data bits, parity, stop bits and flow control mode | |
370 | * from the device, corrects any unsupported values, and configures the | |
371 | * termios structure to reflect the state of the device | |
372 | */ | |
95da310e | 373 | static void cp2101_get_termios (struct tty_struct *tty) |
1da177e4 | 374 | { |
95da310e | 375 | struct usb_serial_port *port = tty->driver_data; |
39a66b8d | 376 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
377 | unsigned int baud; |
378 | unsigned int bits; | |
1da177e4 | 379 | |
441b62c1 | 380 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 381 | |
39a66b8d CS |
382 | cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2); |
383 | /* Convert to baudrate */ | |
1da177e4 LT |
384 | if (baud) |
385 | baud = BAUD_RATE_GEN_FREQ / baud; | |
386 | ||
441b62c1 | 387 | dbg("%s - baud rate = %d", __func__, baud); |
9ab0f202 | 388 | |
95da310e AC |
389 | tty_encode_baud_rate(tty, baud, baud); |
390 | cflag = tty->termios->c_cflag; | |
1da177e4 | 391 | |
39a66b8d | 392 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 | 393 | cflag &= ~CSIZE; |
ff7eb602 AC |
394 | switch (bits & BITS_DATA_MASK) { |
395 | case BITS_DATA_5: | |
396 | dbg("%s - data bits = 5", __func__); | |
397 | cflag |= CS5; | |
398 | break; | |
399 | case BITS_DATA_6: | |
400 | dbg("%s - data bits = 6", __func__); | |
401 | cflag |= CS6; | |
402 | break; | |
403 | case BITS_DATA_7: | |
404 | dbg("%s - data bits = 7", __func__); | |
405 | cflag |= CS7; | |
406 | break; | |
407 | case BITS_DATA_8: | |
408 | dbg("%s - data bits = 8", __func__); | |
409 | cflag |= CS8; | |
410 | break; | |
411 | case BITS_DATA_9: | |
412 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
413 | __func__); | |
414 | cflag |= CS8; | |
415 | bits &= ~BITS_DATA_MASK; | |
416 | bits |= BITS_DATA_8; | |
417 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
418 | break; | |
419 | default: | |
420 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
421 | cflag |= CS8; | |
422 | bits &= ~BITS_DATA_MASK; | |
423 | bits |= BITS_DATA_8; | |
424 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
425 | break; | |
1da177e4 LT |
426 | } |
427 | ||
ff7eb602 AC |
428 | switch (bits & BITS_PARITY_MASK) { |
429 | case BITS_PARITY_NONE: | |
430 | dbg("%s - parity = NONE", __func__); | |
431 | cflag &= ~PARENB; | |
432 | break; | |
433 | case BITS_PARITY_ODD: | |
434 | dbg("%s - parity = ODD", __func__); | |
435 | cflag |= (PARENB|PARODD); | |
436 | break; | |
437 | case BITS_PARITY_EVEN: | |
438 | dbg("%s - parity = EVEN", __func__); | |
439 | cflag &= ~PARODD; | |
440 | cflag |= PARENB; | |
441 | break; | |
442 | case BITS_PARITY_MARK: | |
443 | dbg("%s - parity = MARK (not supported, disabling parity)", | |
444 | __func__); | |
445 | cflag &= ~PARENB; | |
446 | bits &= ~BITS_PARITY_MASK; | |
447 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
448 | break; | |
449 | case BITS_PARITY_SPACE: | |
450 | dbg("%s - parity = SPACE (not supported, disabling parity)", | |
451 | __func__); | |
452 | cflag &= ~PARENB; | |
453 | bits &= ~BITS_PARITY_MASK; | |
454 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
455 | break; | |
456 | default: | |
457 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
458 | cflag &= ~PARENB; | |
459 | bits &= ~BITS_PARITY_MASK; | |
460 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
461 | break; | |
1da177e4 LT |
462 | } |
463 | ||
464 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
465 | switch (bits & BITS_STOP_MASK) { |
466 | case BITS_STOP_1: | |
467 | dbg("%s - stop bits = 1", __func__); | |
468 | break; | |
469 | case BITS_STOP_1_5: | |
470 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
471 | __func__); | |
472 | bits &= ~BITS_STOP_MASK; | |
473 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
474 | break; | |
475 | case BITS_STOP_2: | |
476 | dbg("%s - stop bits = 2", __func__); | |
477 | cflag |= CSTOPB; | |
478 | break; | |
479 | default: | |
480 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
481 | __func__); | |
482 | bits &= ~BITS_STOP_MASK; | |
483 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
484 | break; | |
1da177e4 LT |
485 | } |
486 | ||
39a66b8d CS |
487 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); |
488 | if (modem_ctl[0] & 0x0008) { | |
441b62c1 | 489 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
490 | cflag |= CRTSCTS; |
491 | } else { | |
441b62c1 | 492 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
493 | cflag &= ~CRTSCTS; |
494 | } | |
495 | ||
95da310e | 496 | tty->termios->c_cflag = cflag; |
1da177e4 LT |
497 | } |
498 | ||
ff7eb602 | 499 | static void cp2101_set_termios(struct tty_struct *tty, |
95da310e | 500 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 501 | { |
9ab0f202 | 502 | unsigned int cflag, old_cflag; |
b2bdd1f5 | 503 | unsigned int baud = 0, bits; |
39a66b8d | 504 | unsigned int modem_ctl[4]; |
1da177e4 | 505 | |
441b62c1 | 506 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 507 | |
95da310e | 508 | if (!tty) |
1da177e4 | 509 | return; |
9ab0f202 | 510 | |
95da310e AC |
511 | tty->termios->c_cflag &= ~CMSPAR; |
512 | cflag = tty->termios->c_cflag; | |
01e96d28 | 513 | old_cflag = old_termios->c_cflag; |
95da310e | 514 | baud = tty_get_baud_rate(tty); |
1da177e4 LT |
515 | |
516 | /* If the baud rate is to be updated*/ | |
01e96d28 AC |
517 | if (baud != tty_termios_baud_rate(old_termios)) { |
518 | switch (baud) { | |
ff7eb602 AC |
519 | case 0: |
520 | case 600: | |
521 | case 1200: | |
522 | case 1800: | |
523 | case 2400: | |
524 | case 4800: | |
525 | case 7200: | |
526 | case 9600: | |
527 | case 14400: | |
528 | case 19200: | |
529 | case 28800: | |
530 | case 38400: | |
531 | case 55854: | |
532 | case 57600: | |
533 | case 115200: | |
534 | case 127117: | |
535 | case 230400: | |
536 | case 460800: | |
537 | case 921600: | |
538 | case 3686400: | |
539 | break; | |
540 | default: | |
541 | baud = 9600; | |
542 | break; | |
1da177e4 LT |
543 | } |
544 | ||
545 | if (baud) { | |
441b62c1 | 546 | dbg("%s - Setting baud rate to %d baud", __func__, |
1da177e4 | 547 | baud); |
39a66b8d | 548 | if (cp2101_set_config_single(port, CP2101_BAUDRATE, |
9ab0f202 | 549 | (BAUD_RATE_GEN_FREQ / baud))) { |
1da177e4 LT |
550 | dev_err(&port->dev, "Baud rate requested not " |
551 | "supported by device\n"); | |
9ab0f202 AC |
552 | baud = tty_termios_baud_rate(old_termios); |
553 | } | |
1da177e4 LT |
554 | } |
555 | } | |
9ab0f202 | 556 | /* Report back the resulting baud rate */ |
95da310e | 557 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 | 558 | |
39a66b8d | 559 | /* If the number of data bits is to be updated */ |
1da177e4 | 560 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
39a66b8d | 561 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
562 | bits &= ~BITS_DATA_MASK; |
563 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
564 | case CS5: |
565 | bits |= BITS_DATA_5; | |
566 | dbg("%s - data bits = 5", __func__); | |
567 | break; | |
568 | case CS6: | |
569 | bits |= BITS_DATA_6; | |
570 | dbg("%s - data bits = 6", __func__); | |
571 | break; | |
572 | case CS7: | |
573 | bits |= BITS_DATA_7; | |
574 | dbg("%s - data bits = 7", __func__); | |
575 | break; | |
576 | case CS8: | |
577 | bits |= BITS_DATA_8; | |
578 | dbg("%s - data bits = 8", __func__); | |
579 | break; | |
580 | /*case CS9: | |
581 | bits |= BITS_DATA_9; | |
582 | dbg("%s - data bits = 9", __func__); | |
583 | break;*/ | |
584 | default: | |
585 | dev_err(&port->dev, "cp2101 driver does not " | |
1da177e4 LT |
586 | "support the number of bits requested," |
587 | " using 8 bit mode\n"); | |
588 | bits |= BITS_DATA_8; | |
589 | break; | |
590 | } | |
39a66b8d | 591 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
592 | dev_err(&port->dev, "Number of data bits requested " |
593 | "not supported by device\n"); | |
594 | } | |
595 | ||
596 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
39a66b8d | 597 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
598 | bits &= ~BITS_PARITY_MASK; |
599 | if (cflag & PARENB) { | |
600 | if (cflag & PARODD) { | |
601 | bits |= BITS_PARITY_ODD; | |
441b62c1 | 602 | dbg("%s - parity = ODD", __func__); |
1da177e4 LT |
603 | } else { |
604 | bits |= BITS_PARITY_EVEN; | |
441b62c1 | 605 | dbg("%s - parity = EVEN", __func__); |
1da177e4 LT |
606 | } |
607 | } | |
39a66b8d | 608 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
609 | dev_err(&port->dev, "Parity mode not supported " |
610 | "by device\n"); | |
611 | } | |
612 | ||
613 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
39a66b8d | 614 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
615 | bits &= ~BITS_STOP_MASK; |
616 | if (cflag & CSTOPB) { | |
617 | bits |= BITS_STOP_2; | |
441b62c1 | 618 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
619 | } else { |
620 | bits |= BITS_STOP_1; | |
441b62c1 | 621 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 622 | } |
39a66b8d | 623 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
624 | dev_err(&port->dev, "Number of stop bits requested " |
625 | "not supported by device\n"); | |
626 | } | |
39a66b8d CS |
627 | |
628 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
629 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
630 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 631 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
632 | modem_ctl[2], modem_ctl[3]); |
633 | ||
634 | if (cflag & CRTSCTS) { | |
635 | modem_ctl[0] &= ~0x7B; | |
636 | modem_ctl[0] |= 0x09; | |
637 | modem_ctl[1] = 0x80; | |
441b62c1 | 638 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
639 | } else { |
640 | modem_ctl[0] &= ~0x7B; | |
641 | modem_ctl[0] |= 0x01; | |
642 | modem_ctl[1] |= 0x40; | |
441b62c1 | 643 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
644 | } |
645 | ||
646 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 647 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
648 | modem_ctl[2], modem_ctl[3]); |
649 | cp2101_set_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
650 | } | |
651 | ||
652 | } | |
653 | ||
95da310e | 654 | static int cp2101_tiocmset (struct tty_struct *tty, struct file *file, |
39a66b8d CS |
655 | unsigned int set, unsigned int clear) |
656 | { | |
95da310e | 657 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 658 | unsigned int control = 0; |
39a66b8d | 659 | |
441b62c1 | 660 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
661 | |
662 | if (set & TIOCM_RTS) { | |
663 | control |= CONTROL_RTS; | |
664 | control |= CONTROL_WRITE_RTS; | |
665 | } | |
666 | if (set & TIOCM_DTR) { | |
667 | control |= CONTROL_DTR; | |
668 | control |= CONTROL_WRITE_DTR; | |
669 | } | |
670 | if (clear & TIOCM_RTS) { | |
671 | control &= ~CONTROL_RTS; | |
672 | control |= CONTROL_WRITE_RTS; | |
673 | } | |
674 | if (clear & TIOCM_DTR) { | |
675 | control &= ~CONTROL_DTR; | |
676 | control |= CONTROL_WRITE_DTR; | |
677 | } | |
678 | ||
441b62c1 | 679 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d CS |
680 | |
681 | return cp2101_set_config(port, CP2101_CONTROL, &control, 2); | |
682 | ||
683 | } | |
684 | ||
95da310e | 685 | static int cp2101_tiocmget (struct tty_struct *tty, struct file *file) |
39a66b8d | 686 | { |
95da310e | 687 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
688 | unsigned int control; |
689 | int result; | |
39a66b8d | 690 | |
441b62c1 | 691 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
692 | |
693 | cp2101_get_config(port, CP2101_CONTROL, &control, 1); | |
694 | ||
695 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
696 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
697 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
698 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
699 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
700 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
701 | ||
441b62c1 | 702 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
703 | |
704 | return result; | |
1da177e4 LT |
705 | } |
706 | ||
95da310e | 707 | static void cp2101_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 708 | { |
95da310e | 709 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 710 | unsigned int state; |
1da177e4 | 711 | |
441b62c1 | 712 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
713 | if (break_state == 0) |
714 | state = BREAK_OFF; | |
715 | else | |
716 | state = BREAK_ON; | |
441b62c1 | 717 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 718 | state == BREAK_OFF ? "off" : "on"); |
39a66b8d | 719 | cp2101_set_config(port, CP2101_BREAK, &state, 2); |
1da177e4 LT |
720 | } |
721 | ||
ff7eb602 | 722 | static int cp2101_startup(struct usb_serial *serial) |
1da177e4 | 723 | { |
39a66b8d | 724 | /* CP2101 buffers behave strangely unless device is reset */ |
1da177e4 LT |
725 | usb_reset_device(serial->dev); |
726 | return 0; | |
727 | } | |
728 | ||
ff7eb602 | 729 | static void cp2101_shutdown(struct usb_serial *serial) |
1da177e4 LT |
730 | { |
731 | int i; | |
732 | ||
441b62c1 | 733 | dbg("%s", __func__); |
1da177e4 | 734 | |
39a66b8d | 735 | /* Stop reads and writes on all ports */ |
ff7eb602 | 736 | for (i = 0; i < serial->num_ports; ++i) |
1da177e4 | 737 | cp2101_cleanup(serial->port[i]); |
1da177e4 LT |
738 | } |
739 | ||
ff7eb602 | 740 | static int __init cp2101_init(void) |
1da177e4 LT |
741 | { |
742 | int retval; | |
743 | ||
744 | retval = usb_serial_register(&cp2101_device); | |
745 | if (retval) | |
39a66b8d | 746 | return retval; /* Failed to register */ |
1da177e4 LT |
747 | |
748 | retval = usb_register(&cp2101_driver); | |
749 | if (retval) { | |
39a66b8d | 750 | /* Failed to register */ |
1da177e4 LT |
751 | usb_serial_deregister(&cp2101_device); |
752 | return retval; | |
753 | } | |
754 | ||
39a66b8d | 755 | /* Success */ |
c197a8db GKH |
756 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
757 | DRIVER_DESC "\n"); | |
1da177e4 LT |
758 | return 0; |
759 | } | |
760 | ||
ff7eb602 | 761 | static void __exit cp2101_exit(void) |
1da177e4 | 762 | { |
ff7eb602 AC |
763 | usb_deregister(&cp2101_driver); |
764 | usb_serial_deregister(&cp2101_device); | |
1da177e4 LT |
765 | } |
766 | ||
767 | module_init(cp2101_init); | |
768 | module_exit(cp2101_exit); | |
769 | ||
770 | MODULE_DESCRIPTION(DRIVER_DESC); | |
771 | MODULE_VERSION(DRIVER_VERSION); | |
772 | MODULE_LICENSE("GPL"); | |
773 | ||
774 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
775 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |