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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 [] = { | |
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 */ |
9a18e75f | 70 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 71 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
e988fc8a CS |
72 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
73 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 74 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 75 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 76 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 77 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
fc4bd64c JH |
78 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
79 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
e988fc8a | 80 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
96623697 | 81 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
59fba744 | 82 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
78001e3d BS |
83 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
84 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 85 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
78001e3d | 86 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
e8898681 | 87 | { USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */ |
ba0f332c | 88 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
881e3c98 | 89 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
e988fc8a | 90 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 91 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
5de8b3ac CS |
92 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
93 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
94 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
95 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 96 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
e05998d5 | 97 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
5de8b3ac | 98 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 99 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
ba0f332c | 100 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ |
39a66b8d | 101 | { } /* Terminating Entry */ |
1da177e4 LT |
102 | }; |
103 | ||
ff7eb602 | 104 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
105 | |
106 | static struct usb_driver cp2101_driver = { | |
269bda1c | 107 | .name = "cp2101", |
1da177e4 LT |
108 | .probe = usb_serial_probe, |
109 | .disconnect = usb_serial_disconnect, | |
110 | .id_table = id_table, | |
ba9dc657 | 111 | .no_dynamic_id = 1, |
1da177e4 LT |
112 | }; |
113 | ||
ea65370d | 114 | static struct usb_serial_driver cp2101_device = { |
18fcac35 GKH |
115 | .driver = { |
116 | .owner = THIS_MODULE, | |
269bda1c | 117 | .name = "cp2101", |
18fcac35 | 118 | }, |
d9b1b787 | 119 | .usb_driver = &cp2101_driver, |
1da177e4 | 120 | .id_table = id_table, |
1da177e4 LT |
121 | .num_ports = 1, |
122 | .open = cp2101_open, | |
123 | .close = cp2101_close, | |
124 | .break_ctl = cp2101_break_ctl, | |
125 | .set_termios = cp2101_set_termios, | |
39a66b8d CS |
126 | .tiocmget = cp2101_tiocmget, |
127 | .tiocmset = cp2101_tiocmset, | |
1da177e4 LT |
128 | .attach = cp2101_startup, |
129 | .shutdown = cp2101_shutdown, | |
130 | }; | |
131 | ||
39a66b8d | 132 | /* Config request types */ |
1da177e4 LT |
133 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
134 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
135 | ||
39a66b8d CS |
136 | /* Config SET requests. To GET, add 1 to the request number */ |
137 | #define CP2101_UART 0x00 /* Enable / Disable */ | |
138 | #define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */ | |
139 | #define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */ | |
140 | #define CP2101_BREAK 0x05 /* On / Off */ | |
141 | #define CP2101_CONTROL 0x07 /* Flow control line states */ | |
142 | #define CP2101_MODEMCTL 0x13 /* Modem controls */ | |
143 | #define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */ | |
1da177e4 | 144 | |
39a66b8d | 145 | /* CP2101_UART */ |
1da177e4 LT |
146 | #define UART_ENABLE 0x0001 |
147 | #define UART_DISABLE 0x0000 | |
148 | ||
39a66b8d | 149 | /* CP2101_BAUDRATE */ |
1da177e4 LT |
150 | #define BAUD_RATE_GEN_FREQ 0x384000 |
151 | ||
39a66b8d | 152 | /* CP2101_BITS */ |
1da177e4 | 153 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 154 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
155 | #define BITS_DATA_6 0X0600 |
156 | #define BITS_DATA_7 0X0700 | |
157 | #define BITS_DATA_8 0X0800 | |
158 | #define BITS_DATA_9 0X0900 | |
159 | ||
160 | #define BITS_PARITY_MASK 0x00f0 | |
161 | #define BITS_PARITY_NONE 0x0000 | |
162 | #define BITS_PARITY_ODD 0x0010 | |
163 | #define BITS_PARITY_EVEN 0x0020 | |
164 | #define BITS_PARITY_MARK 0x0030 | |
165 | #define BITS_PARITY_SPACE 0x0040 | |
166 | ||
167 | #define BITS_STOP_MASK 0x000f | |
168 | #define BITS_STOP_1 0x0000 | |
169 | #define BITS_STOP_1_5 0x0001 | |
170 | #define BITS_STOP_2 0x0002 | |
39a66b8d CS |
171 | |
172 | /* CP2101_BREAK */ | |
1da177e4 LT |
173 | #define BREAK_ON 0x0000 |
174 | #define BREAK_OFF 0x0001 | |
175 | ||
39a66b8d CS |
176 | /* CP2101_CONTROL */ |
177 | #define CONTROL_DTR 0x0001 | |
178 | #define CONTROL_RTS 0x0002 | |
179 | #define CONTROL_CTS 0x0010 | |
180 | #define CONTROL_DSR 0x0020 | |
181 | #define CONTROL_RING 0x0040 | |
182 | #define CONTROL_DCD 0x0080 | |
183 | #define CONTROL_WRITE_DTR 0x0100 | |
184 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 185 | |
39a66b8d CS |
186 | /* |
187 | * cp2101_get_config | |
188 | * Reads from the CP2101 configuration registers | |
189 | * 'size' is specified in bytes. | |
190 | * 'data' is a pointer to a pre-allocated array of integers large | |
191 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
192 | */ | |
95da310e | 193 | static int cp2101_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 194 | unsigned int *data, int size) |
1da177e4 LT |
195 | { |
196 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 197 | __le32 *buf; |
39a66b8d CS |
198 | int result, i, length; |
199 | ||
200 | /* Number of integers required to contain the array */ | |
201 | length = (((size - 1) | 3) + 1)/4; | |
202 | ||
53ebb3b8 | 203 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 204 | if (!buf) { |
441b62c1 | 205 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
206 | return -ENOMEM; |
207 | } | |
1da177e4 | 208 | |
39a66b8d | 209 | /* For get requests, the request number must be incremented */ |
1da177e4 LT |
210 | request++; |
211 | ||
39a66b8d | 212 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 213 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 214 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 215 | 0, buf, size, 300); |
1da177e4 | 216 | |
39a66b8d | 217 | /* Convert data into an array of integers */ |
ff7eb602 | 218 | for (i = 0; i < length; i++) |
39a66b8d | 219 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 220 | |
39a66b8d | 221 | kfree(buf); |
1da177e4 | 222 | |
39a66b8d CS |
223 | if (result != size) { |
224 | dev_err(&port->dev, "%s - Unable to send config request, " | |
225 | "request=0x%x size=%d result=%d\n", | |
441b62c1 | 226 | __func__, request, size, result); |
39a66b8d CS |
227 | return -EPROTO; |
228 | } | |
1da177e4 | 229 | |
39a66b8d | 230 | return 0; |
1da177e4 LT |
231 | } |
232 | ||
39a66b8d CS |
233 | /* |
234 | * cp2101_set_config | |
235 | * Writes to the CP2101 configuration registers | |
236 | * Values less than 16 bits wide are sent directly | |
237 | * 'size' is specified in bytes. | |
238 | */ | |
95da310e | 239 | static int cp2101_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 240 | unsigned int *data, int size) |
1da177e4 LT |
241 | { |
242 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 243 | __le32 *buf; |
39a66b8d | 244 | int result, i, length; |
1da177e4 | 245 | |
39a66b8d CS |
246 | /* Number of integers required to contain the array */ |
247 | length = (((size - 1) | 3) + 1)/4; | |
248 | ||
53ebb3b8 | 249 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
250 | if (!buf) { |
251 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 252 | __func__); |
39a66b8d CS |
253 | return -ENOMEM; |
254 | } | |
255 | ||
256 | /* Array of integers into bytes */ | |
257 | for (i = 0; i < length; i++) | |
258 | buf[i] = cpu_to_le32(data[i]); | |
259 | ||
260 | if (size > 2) { | |
ff7eb602 | 261 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
262 | usb_sndctrlpipe(serial->dev, 0), |
263 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
264 | 0, buf, size, 300); | |
265 | } else { | |
ff7eb602 | 266 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
267 | usb_sndctrlpipe(serial->dev, 0), |
268 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
269 | 0, NULL, 0, 300); | |
1da177e4 LT |
270 | } |
271 | ||
39a66b8d CS |
272 | kfree(buf); |
273 | ||
274 | if ((size > 2 && result != size) || result < 0) { | |
275 | dev_err(&port->dev, "%s - Unable to send request, " | |
276 | "request=0x%x size=%d result=%d\n", | |
441b62c1 | 277 | __func__, request, size, result); |
39a66b8d CS |
278 | return -EPROTO; |
279 | } | |
1da177e4 | 280 | |
39a66b8d | 281 | /* Single data value */ |
ff7eb602 | 282 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
283 | usb_sndctrlpipe(serial->dev, 0), |
284 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
285 | 0, NULL, 0, 300); | |
1da177e4 LT |
286 | return 0; |
287 | } | |
288 | ||
39a66b8d CS |
289 | /* |
290 | * cp2101_set_config_single | |
291 | * Convenience function for calling cp2101_set_config on single data values | |
292 | * without requiring an integer pointer | |
293 | */ | |
95da310e | 294 | static inline int cp2101_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
295 | u8 request, unsigned int data) |
296 | { | |
297 | return cp2101_set_config(port, request, &data, 2); | |
298 | } | |
299 | ||
ff7eb602 | 300 | static int cp2101_open(struct tty_struct *tty, struct usb_serial_port *port, |
95da310e | 301 | struct file *filp) |
1da177e4 LT |
302 | { |
303 | struct usb_serial *serial = port->serial; | |
304 | int result; | |
305 | ||
441b62c1 | 306 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 307 | |
39a66b8d | 308 | if (cp2101_set_config_single(port, CP2101_UART, UART_ENABLE)) { |
1da177e4 | 309 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
441b62c1 | 310 | __func__); |
1da177e4 LT |
311 | return -EPROTO; |
312 | } | |
313 | ||
314 | /* Start reading from the device */ | |
ff7eb602 | 315 | usb_fill_bulk_urb(port->read_urb, serial->dev, |
1da177e4 LT |
316 | usb_rcvbulkpipe(serial->dev, |
317 | port->bulk_in_endpointAddress), | |
318 | port->read_urb->transfer_buffer, | |
319 | port->read_urb->transfer_buffer_length, | |
320 | serial->type->read_bulk_callback, | |
321 | port); | |
322 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
323 | if (result) { | |
324 | dev_err(&port->dev, "%s - failed resubmitting read urb, " | |
441b62c1 | 325 | "error %d\n", __func__, result); |
1da177e4 LT |
326 | return result; |
327 | } | |
328 | ||
39a66b8d | 329 | /* Configure the termios structure */ |
95da310e | 330 | cp2101_get_termios(tty); |
1da177e4 | 331 | |
39a66b8d | 332 | /* Set the DTR and RTS pins low */ |
95da310e | 333 | cp2101_tiocmset(tty, NULL, TIOCM_DTR | TIOCM_RTS, 0); |
39a66b8d | 334 | |
1da177e4 LT |
335 | return 0; |
336 | } | |
337 | ||
ff7eb602 | 338 | static void cp2101_cleanup(struct usb_serial_port *port) |
1da177e4 LT |
339 | { |
340 | struct usb_serial *serial = port->serial; | |
341 | ||
441b62c1 | 342 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
343 | |
344 | if (serial->dev) { | |
345 | /* shutdown any bulk reads that might be going on */ | |
346 | if (serial->num_bulk_out) | |
347 | usb_kill_urb(port->write_urb); | |
348 | if (serial->num_bulk_in) | |
349 | usb_kill_urb(port->read_urb); | |
350 | } | |
351 | } | |
352 | ||
95da310e | 353 | static void cp2101_close(struct tty_struct *tty, struct usb_serial_port *port, |
ff7eb602 | 354 | struct file *filp) |
1da177e4 | 355 | { |
441b62c1 | 356 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
357 | |
358 | /* shutdown our urbs */ | |
441b62c1 | 359 | dbg("%s - shutting down urbs", __func__); |
1da177e4 LT |
360 | usb_kill_urb(port->write_urb); |
361 | usb_kill_urb(port->read_urb); | |
362 | ||
95bef012 ON |
363 | mutex_lock(&port->serial->disc_mutex); |
364 | if (!port->serial->disconnected) | |
365 | cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); | |
366 | mutex_unlock(&port->serial->disc_mutex); | |
1da177e4 LT |
367 | } |
368 | ||
39a66b8d CS |
369 | /* |
370 | * cp2101_get_termios | |
371 | * Reads the baud rate, data bits, parity, stop bits and flow control mode | |
372 | * from the device, corrects any unsupported values, and configures the | |
373 | * termios structure to reflect the state of the device | |
374 | */ | |
95da310e | 375 | static void cp2101_get_termios (struct tty_struct *tty) |
1da177e4 | 376 | { |
95da310e | 377 | struct usb_serial_port *port = tty->driver_data; |
39a66b8d | 378 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
379 | unsigned int baud; |
380 | unsigned int bits; | |
1da177e4 | 381 | |
441b62c1 | 382 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 383 | |
39a66b8d CS |
384 | cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2); |
385 | /* Convert to baudrate */ | |
1da177e4 LT |
386 | if (baud) |
387 | baud = BAUD_RATE_GEN_FREQ / baud; | |
388 | ||
441b62c1 | 389 | dbg("%s - baud rate = %d", __func__, baud); |
9ab0f202 | 390 | |
95da310e AC |
391 | tty_encode_baud_rate(tty, baud, baud); |
392 | cflag = tty->termios->c_cflag; | |
1da177e4 | 393 | |
39a66b8d | 394 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 | 395 | cflag &= ~CSIZE; |
ff7eb602 AC |
396 | switch (bits & BITS_DATA_MASK) { |
397 | case BITS_DATA_5: | |
398 | dbg("%s - data bits = 5", __func__); | |
399 | cflag |= CS5; | |
400 | break; | |
401 | case BITS_DATA_6: | |
402 | dbg("%s - data bits = 6", __func__); | |
403 | cflag |= CS6; | |
404 | break; | |
405 | case BITS_DATA_7: | |
406 | dbg("%s - data bits = 7", __func__); | |
407 | cflag |= CS7; | |
408 | break; | |
409 | case BITS_DATA_8: | |
410 | dbg("%s - data bits = 8", __func__); | |
411 | cflag |= CS8; | |
412 | break; | |
413 | case BITS_DATA_9: | |
414 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
415 | __func__); | |
416 | cflag |= CS8; | |
417 | bits &= ~BITS_DATA_MASK; | |
418 | bits |= BITS_DATA_8; | |
419 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
420 | break; | |
421 | default: | |
422 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
423 | cflag |= CS8; | |
424 | bits &= ~BITS_DATA_MASK; | |
425 | bits |= BITS_DATA_8; | |
426 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
427 | break; | |
1da177e4 LT |
428 | } |
429 | ||
ff7eb602 AC |
430 | switch (bits & BITS_PARITY_MASK) { |
431 | case BITS_PARITY_NONE: | |
432 | dbg("%s - parity = NONE", __func__); | |
433 | cflag &= ~PARENB; | |
434 | break; | |
435 | case BITS_PARITY_ODD: | |
436 | dbg("%s - parity = ODD", __func__); | |
437 | cflag |= (PARENB|PARODD); | |
438 | break; | |
439 | case BITS_PARITY_EVEN: | |
440 | dbg("%s - parity = EVEN", __func__); | |
441 | cflag &= ~PARODD; | |
442 | cflag |= PARENB; | |
443 | break; | |
444 | case BITS_PARITY_MARK: | |
445 | dbg("%s - parity = MARK (not supported, disabling parity)", | |
446 | __func__); | |
447 | cflag &= ~PARENB; | |
448 | bits &= ~BITS_PARITY_MASK; | |
449 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
450 | break; | |
451 | case BITS_PARITY_SPACE: | |
452 | dbg("%s - parity = SPACE (not supported, disabling parity)", | |
453 | __func__); | |
454 | cflag &= ~PARENB; | |
455 | bits &= ~BITS_PARITY_MASK; | |
456 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
457 | break; | |
458 | default: | |
459 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
460 | cflag &= ~PARENB; | |
461 | bits &= ~BITS_PARITY_MASK; | |
462 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
463 | break; | |
1da177e4 LT |
464 | } |
465 | ||
466 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
467 | switch (bits & BITS_STOP_MASK) { |
468 | case BITS_STOP_1: | |
469 | dbg("%s - stop bits = 1", __func__); | |
470 | break; | |
471 | case BITS_STOP_1_5: | |
472 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
473 | __func__); | |
474 | bits &= ~BITS_STOP_MASK; | |
475 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
476 | break; | |
477 | case BITS_STOP_2: | |
478 | dbg("%s - stop bits = 2", __func__); | |
479 | cflag |= CSTOPB; | |
480 | break; | |
481 | default: | |
482 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
483 | __func__); | |
484 | bits &= ~BITS_STOP_MASK; | |
485 | cp2101_set_config(port, CP2101_BITS, &bits, 2); | |
486 | break; | |
1da177e4 LT |
487 | } |
488 | ||
39a66b8d CS |
489 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); |
490 | if (modem_ctl[0] & 0x0008) { | |
441b62c1 | 491 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
492 | cflag |= CRTSCTS; |
493 | } else { | |
441b62c1 | 494 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
495 | cflag &= ~CRTSCTS; |
496 | } | |
497 | ||
95da310e | 498 | tty->termios->c_cflag = cflag; |
1da177e4 LT |
499 | } |
500 | ||
ff7eb602 | 501 | static void cp2101_set_termios(struct tty_struct *tty, |
95da310e | 502 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 503 | { |
9ab0f202 | 504 | unsigned int cflag, old_cflag; |
b2bdd1f5 | 505 | unsigned int baud = 0, bits; |
39a66b8d | 506 | unsigned int modem_ctl[4]; |
1da177e4 | 507 | |
441b62c1 | 508 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 509 | |
95da310e | 510 | if (!tty) |
1da177e4 | 511 | return; |
9ab0f202 | 512 | |
95da310e AC |
513 | tty->termios->c_cflag &= ~CMSPAR; |
514 | cflag = tty->termios->c_cflag; | |
01e96d28 | 515 | old_cflag = old_termios->c_cflag; |
95da310e | 516 | baud = tty_get_baud_rate(tty); |
1da177e4 LT |
517 | |
518 | /* If the baud rate is to be updated*/ | |
01e96d28 AC |
519 | if (baud != tty_termios_baud_rate(old_termios)) { |
520 | switch (baud) { | |
ff7eb602 AC |
521 | case 0: |
522 | case 600: | |
523 | case 1200: | |
524 | case 1800: | |
525 | case 2400: | |
526 | case 4800: | |
527 | case 7200: | |
528 | case 9600: | |
529 | case 14400: | |
530 | case 19200: | |
531 | case 28800: | |
532 | case 38400: | |
533 | case 55854: | |
534 | case 57600: | |
535 | case 115200: | |
536 | case 127117: | |
537 | case 230400: | |
538 | case 460800: | |
539 | case 921600: | |
540 | case 3686400: | |
541 | break; | |
542 | default: | |
543 | baud = 9600; | |
544 | break; | |
1da177e4 LT |
545 | } |
546 | ||
547 | if (baud) { | |
441b62c1 | 548 | dbg("%s - Setting baud rate to %d baud", __func__, |
1da177e4 | 549 | baud); |
39a66b8d | 550 | if (cp2101_set_config_single(port, CP2101_BAUDRATE, |
9ab0f202 | 551 | (BAUD_RATE_GEN_FREQ / baud))) { |
1da177e4 LT |
552 | dev_err(&port->dev, "Baud rate requested not " |
553 | "supported by device\n"); | |
9ab0f202 AC |
554 | baud = tty_termios_baud_rate(old_termios); |
555 | } | |
1da177e4 LT |
556 | } |
557 | } | |
9ab0f202 | 558 | /* Report back the resulting baud rate */ |
95da310e | 559 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 | 560 | |
39a66b8d | 561 | /* If the number of data bits is to be updated */ |
1da177e4 | 562 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
39a66b8d | 563 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
564 | bits &= ~BITS_DATA_MASK; |
565 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
566 | case CS5: |
567 | bits |= BITS_DATA_5; | |
568 | dbg("%s - data bits = 5", __func__); | |
569 | break; | |
570 | case CS6: | |
571 | bits |= BITS_DATA_6; | |
572 | dbg("%s - data bits = 6", __func__); | |
573 | break; | |
574 | case CS7: | |
575 | bits |= BITS_DATA_7; | |
576 | dbg("%s - data bits = 7", __func__); | |
577 | break; | |
578 | case CS8: | |
579 | bits |= BITS_DATA_8; | |
580 | dbg("%s - data bits = 8", __func__); | |
581 | break; | |
582 | /*case CS9: | |
583 | bits |= BITS_DATA_9; | |
584 | dbg("%s - data bits = 9", __func__); | |
585 | break;*/ | |
586 | default: | |
587 | dev_err(&port->dev, "cp2101 driver does not " | |
1da177e4 LT |
588 | "support the number of bits requested," |
589 | " using 8 bit mode\n"); | |
590 | bits |= BITS_DATA_8; | |
591 | break; | |
592 | } | |
39a66b8d | 593 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
594 | dev_err(&port->dev, "Number of data bits requested " |
595 | "not supported by device\n"); | |
596 | } | |
597 | ||
598 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
39a66b8d | 599 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
600 | bits &= ~BITS_PARITY_MASK; |
601 | if (cflag & PARENB) { | |
602 | if (cflag & PARODD) { | |
603 | bits |= BITS_PARITY_ODD; | |
441b62c1 | 604 | dbg("%s - parity = ODD", __func__); |
1da177e4 LT |
605 | } else { |
606 | bits |= BITS_PARITY_EVEN; | |
441b62c1 | 607 | dbg("%s - parity = EVEN", __func__); |
1da177e4 LT |
608 | } |
609 | } | |
39a66b8d | 610 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
611 | dev_err(&port->dev, "Parity mode not supported " |
612 | "by device\n"); | |
613 | } | |
614 | ||
615 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
39a66b8d | 616 | cp2101_get_config(port, CP2101_BITS, &bits, 2); |
1da177e4 LT |
617 | bits &= ~BITS_STOP_MASK; |
618 | if (cflag & CSTOPB) { | |
619 | bits |= BITS_STOP_2; | |
441b62c1 | 620 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
621 | } else { |
622 | bits |= BITS_STOP_1; | |
441b62c1 | 623 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 624 | } |
39a66b8d | 625 | if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) |
1da177e4 LT |
626 | dev_err(&port->dev, "Number of stop bits requested " |
627 | "not supported by device\n"); | |
628 | } | |
39a66b8d CS |
629 | |
630 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
631 | cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
632 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 633 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
634 | modem_ctl[2], modem_ctl[3]); |
635 | ||
636 | if (cflag & CRTSCTS) { | |
637 | modem_ctl[0] &= ~0x7B; | |
638 | modem_ctl[0] |= 0x09; | |
639 | modem_ctl[1] = 0x80; | |
441b62c1 | 640 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
641 | } else { |
642 | modem_ctl[0] &= ~0x7B; | |
643 | modem_ctl[0] |= 0x01; | |
644 | modem_ctl[1] |= 0x40; | |
441b62c1 | 645 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
646 | } |
647 | ||
648 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 649 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
650 | modem_ctl[2], modem_ctl[3]); |
651 | cp2101_set_config(port, CP2101_MODEMCTL, modem_ctl, 16); | |
652 | } | |
653 | ||
654 | } | |
655 | ||
95da310e | 656 | static int cp2101_tiocmset (struct tty_struct *tty, struct file *file, |
39a66b8d CS |
657 | unsigned int set, unsigned int clear) |
658 | { | |
95da310e | 659 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 660 | unsigned int control = 0; |
39a66b8d | 661 | |
441b62c1 | 662 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
663 | |
664 | if (set & TIOCM_RTS) { | |
665 | control |= CONTROL_RTS; | |
666 | control |= CONTROL_WRITE_RTS; | |
667 | } | |
668 | if (set & TIOCM_DTR) { | |
669 | control |= CONTROL_DTR; | |
670 | control |= CONTROL_WRITE_DTR; | |
671 | } | |
672 | if (clear & TIOCM_RTS) { | |
673 | control &= ~CONTROL_RTS; | |
674 | control |= CONTROL_WRITE_RTS; | |
675 | } | |
676 | if (clear & TIOCM_DTR) { | |
677 | control &= ~CONTROL_DTR; | |
678 | control |= CONTROL_WRITE_DTR; | |
679 | } | |
680 | ||
441b62c1 | 681 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d CS |
682 | |
683 | return cp2101_set_config(port, CP2101_CONTROL, &control, 2); | |
684 | ||
685 | } | |
686 | ||
95da310e | 687 | static int cp2101_tiocmget (struct tty_struct *tty, struct file *file) |
39a66b8d | 688 | { |
95da310e | 689 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
690 | unsigned int control; |
691 | int result; | |
39a66b8d | 692 | |
441b62c1 | 693 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
694 | |
695 | cp2101_get_config(port, CP2101_CONTROL, &control, 1); | |
696 | ||
697 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
698 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
699 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
700 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
701 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
702 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
703 | ||
441b62c1 | 704 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
705 | |
706 | return result; | |
1da177e4 LT |
707 | } |
708 | ||
95da310e | 709 | static void cp2101_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 710 | { |
95da310e | 711 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 712 | unsigned int state; |
1da177e4 | 713 | |
441b62c1 | 714 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
715 | if (break_state == 0) |
716 | state = BREAK_OFF; | |
717 | else | |
718 | state = BREAK_ON; | |
441b62c1 | 719 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 720 | state == BREAK_OFF ? "off" : "on"); |
39a66b8d | 721 | cp2101_set_config(port, CP2101_BREAK, &state, 2); |
1da177e4 LT |
722 | } |
723 | ||
ff7eb602 | 724 | static int cp2101_startup(struct usb_serial *serial) |
1da177e4 | 725 | { |
39a66b8d | 726 | /* CP2101 buffers behave strangely unless device is reset */ |
1da177e4 LT |
727 | usb_reset_device(serial->dev); |
728 | return 0; | |
729 | } | |
730 | ||
ff7eb602 | 731 | static void cp2101_shutdown(struct usb_serial *serial) |
1da177e4 LT |
732 | { |
733 | int i; | |
734 | ||
441b62c1 | 735 | dbg("%s", __func__); |
1da177e4 | 736 | |
39a66b8d | 737 | /* Stop reads and writes on all ports */ |
ff7eb602 | 738 | for (i = 0; i < serial->num_ports; ++i) |
1da177e4 | 739 | cp2101_cleanup(serial->port[i]); |
1da177e4 LT |
740 | } |
741 | ||
ff7eb602 | 742 | static int __init cp2101_init(void) |
1da177e4 LT |
743 | { |
744 | int retval; | |
745 | ||
746 | retval = usb_serial_register(&cp2101_device); | |
747 | if (retval) | |
39a66b8d | 748 | return retval; /* Failed to register */ |
1da177e4 LT |
749 | |
750 | retval = usb_register(&cp2101_driver); | |
751 | if (retval) { | |
39a66b8d | 752 | /* Failed to register */ |
1da177e4 LT |
753 | usb_serial_deregister(&cp2101_device); |
754 | return retval; | |
755 | } | |
756 | ||
39a66b8d | 757 | /* Success */ |
c197a8db GKH |
758 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
759 | DRIVER_DESC "\n"); | |
1da177e4 LT |
760 | return 0; |
761 | } | |
762 | ||
ff7eb602 | 763 | static void __exit cp2101_exit(void) |
1da177e4 | 764 | { |
ff7eb602 AC |
765 | usb_deregister(&cp2101_driver); |
766 | usb_serial_deregister(&cp2101_device); | |
1da177e4 LT |
767 | } |
768 | ||
769 | module_init(cp2101_init); | |
770 | module_exit(cp2101_exit); | |
771 | ||
772 | MODULE_DESCRIPTION(DRIVER_DESC); | |
773 | MODULE_VERSION(DRIVER_VERSION); | |
774 | MODULE_LICENSE("GPL"); | |
775 | ||
776 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
777 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |