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Commit | Line | Data |
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1da177e4 | 1 | /* |
4cc27bd6 | 2 | * Silicon Laboratories CP210x USB to RS232 serial adaptor driver |
1da177e4 LT |
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 | * | |
1da177e4 LT |
14 | */ |
15 | ||
1da177e4 LT |
16 | #include <linux/kernel.h> |
17 | #include <linux/errno.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/tty.h> | |
20 | #include <linux/tty_flip.h> | |
21 | #include <linux/module.h> | |
22 | #include <linux/moduleparam.h> | |
23 | #include <linux/usb.h> | |
ff7eb602 | 24 | #include <linux/uaccess.h> |
a969888c | 25 | #include <linux/usb/serial.h> |
1da177e4 LT |
26 | |
27 | /* | |
28 | * Version Information | |
29 | */ | |
93ef1f1f | 30 | #define DRIVER_VERSION "v0.09" |
4cc27bd6 | 31 | #define DRIVER_DESC "Silicon Labs CP210x RS232 serial adaptor driver" |
1da177e4 LT |
32 | |
33 | /* | |
34 | * Function Prototypes | |
35 | */ | |
a509a7e4 | 36 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *); |
4cc27bd6 CS |
37 | static void cp210x_close(struct usb_serial_port *); |
38 | static void cp210x_get_termios(struct tty_struct *, | |
d2ad67b3 | 39 | struct usb_serial_port *port); |
4cc27bd6 | 40 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 41 | unsigned int *cflagp, unsigned int *baudp); |
4cc27bd6 | 42 | static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *, |
95da310e | 43 | struct ktermios*); |
4cc27bd6 CS |
44 | static int cp210x_tiocmget(struct tty_struct *, struct file *); |
45 | static int cp210x_tiocmset(struct tty_struct *, struct file *, | |
39a66b8d | 46 | unsigned int, unsigned int); |
4cc27bd6 | 47 | static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *, |
d2ad67b3 | 48 | unsigned int, unsigned int); |
4cc27bd6 CS |
49 | static void cp210x_break_ctl(struct tty_struct *, int); |
50 | static int cp210x_startup(struct usb_serial *); | |
d94c7bd4 AC |
51 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on); |
52 | static int cp210x_carrier_raised(struct usb_serial_port *p); | |
1da177e4 | 53 | |
1da177e4 LT |
54 | static int debug; |
55 | ||
7d40d7e8 | 56 | static const struct usb_device_id id_table[] = { |
5091b587 | 57 | { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ |
59fba744 | 58 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
b7c7cbc8 | 59 | { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ |
1f4f714f | 60 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
b7c7cbc8 | 61 | { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ |
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 */ | |
b7c7cbc8 | 68 | { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */ |
0601e116 AK |
69 | { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */ |
70 | { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ | |
5de8b3ac | 71 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 72 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
92f5cae2 | 73 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 74 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 75 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
e988fc8a CS |
76 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
77 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 78 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 79 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 80 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 81 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
8bf16ba7 | 82 | { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */ |
fc4bd64c JH |
83 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
84 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
e988fc8a | 85 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
c6535668 | 86 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 87 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
59fba744 | 88 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
78001e3d BS |
89 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
90 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 91 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
bd07c551 | 92 | { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */ |
b7c7cbc8 | 93 | { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ |
78001e3d | 94 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 95 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
95bec45d | 96 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */ |
bd07c551 | 97 | { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesys ETRX2USB */ |
b7c7cbc8 | 98 | { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ |
ba0f332c | 99 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
8bf16ba7 | 100 | { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */ |
881e3c98 | 101 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
8bf16ba7 | 102 | { USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */ |
d23bac9f | 103 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
e988fc8a | 104 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 105 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
5de8b3ac CS |
106 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
107 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
108 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
109 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 110 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 111 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 112 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 113 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
5de8b3ac | 114 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 115 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
ba0f332c | 116 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ |
6f88139e | 117 | { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ |
39a66b8d | 118 | { } /* Terminating Entry */ |
1da177e4 LT |
119 | }; |
120 | ||
ff7eb602 | 121 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 122 | |
4cc27bd6 CS |
123 | static struct usb_driver cp210x_driver = { |
124 | .name = "cp210x", | |
1da177e4 LT |
125 | .probe = usb_serial_probe, |
126 | .disconnect = usb_serial_disconnect, | |
127 | .id_table = id_table, | |
ba9dc657 | 128 | .no_dynamic_id = 1, |
1da177e4 LT |
129 | }; |
130 | ||
4cc27bd6 | 131 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
132 | .driver = { |
133 | .owner = THIS_MODULE, | |
4cc27bd6 | 134 | .name = "cp210x", |
18fcac35 | 135 | }, |
4cc27bd6 | 136 | .usb_driver = &cp210x_driver, |
1da177e4 | 137 | .id_table = id_table, |
1da177e4 | 138 | .num_ports = 1, |
aea006b9 | 139 | .bulk_in_size = 256, |
d4e598f6 | 140 | .bulk_out_size = 256, |
4cc27bd6 CS |
141 | .open = cp210x_open, |
142 | .close = cp210x_close, | |
143 | .break_ctl = cp210x_break_ctl, | |
144 | .set_termios = cp210x_set_termios, | |
145 | .tiocmget = cp210x_tiocmget, | |
146 | .tiocmset = cp210x_tiocmset, | |
147 | .attach = cp210x_startup, | |
d94c7bd4 AC |
148 | .dtr_rts = cp210x_dtr_rts, |
149 | .carrier_raised = cp210x_carrier_raised | |
1da177e4 LT |
150 | }; |
151 | ||
39a66b8d | 152 | /* Config request types */ |
1da177e4 LT |
153 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
154 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
155 | ||
93ef1f1f CS |
156 | /* Config request codes */ |
157 | #define CP210X_IFC_ENABLE 0x00 | |
158 | #define CP210X_SET_BAUDDIV 0x01 | |
159 | #define CP210X_GET_BAUDDIV 0x02 | |
160 | #define CP210X_SET_LINE_CTL 0x03 | |
161 | #define CP210X_GET_LINE_CTL 0x04 | |
162 | #define CP210X_SET_BREAK 0x05 | |
163 | #define CP210X_IMM_CHAR 0x06 | |
164 | #define CP210X_SET_MHS 0x07 | |
165 | #define CP210X_GET_MDMSTS 0x08 | |
166 | #define CP210X_SET_XON 0x09 | |
167 | #define CP210X_SET_XOFF 0x0A | |
168 | #define CP210X_SET_EVENTMASK 0x0B | |
169 | #define CP210X_GET_EVENTMASK 0x0C | |
170 | #define CP210X_SET_CHAR 0x0D | |
171 | #define CP210X_GET_CHARS 0x0E | |
172 | #define CP210X_GET_PROPS 0x0F | |
173 | #define CP210X_GET_COMM_STATUS 0x10 | |
174 | #define CP210X_RESET 0x11 | |
175 | #define CP210X_PURGE 0x12 | |
176 | #define CP210X_SET_FLOW 0x13 | |
177 | #define CP210X_GET_FLOW 0x14 | |
178 | #define CP210X_EMBED_EVENTS 0x15 | |
179 | #define CP210X_GET_EVENTSTATE 0x16 | |
180 | #define CP210X_SET_CHARS 0x19 | |
181 | ||
182 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
183 | #define UART_ENABLE 0x0001 |
184 | #define UART_DISABLE 0x0000 | |
185 | ||
93ef1f1f | 186 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
187 | #define BAUD_RATE_GEN_FREQ 0x384000 |
188 | ||
93ef1f1f | 189 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 190 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 191 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
192 | #define BITS_DATA_6 0X0600 |
193 | #define BITS_DATA_7 0X0700 | |
194 | #define BITS_DATA_8 0X0800 | |
195 | #define BITS_DATA_9 0X0900 | |
196 | ||
197 | #define BITS_PARITY_MASK 0x00f0 | |
198 | #define BITS_PARITY_NONE 0x0000 | |
199 | #define BITS_PARITY_ODD 0x0010 | |
200 | #define BITS_PARITY_EVEN 0x0020 | |
201 | #define BITS_PARITY_MARK 0x0030 | |
202 | #define BITS_PARITY_SPACE 0x0040 | |
203 | ||
204 | #define BITS_STOP_MASK 0x000f | |
205 | #define BITS_STOP_1 0x0000 | |
206 | #define BITS_STOP_1_5 0x0001 | |
207 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 208 | |
93ef1f1f | 209 | /* CP210X_SET_BREAK */ |
1da177e4 LT |
210 | #define BREAK_ON 0x0000 |
211 | #define BREAK_OFF 0x0001 | |
212 | ||
93ef1f1f | 213 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
214 | #define CONTROL_DTR 0x0001 |
215 | #define CONTROL_RTS 0x0002 | |
216 | #define CONTROL_CTS 0x0010 | |
217 | #define CONTROL_DSR 0x0020 | |
218 | #define CONTROL_RING 0x0040 | |
219 | #define CONTROL_DCD 0x0080 | |
220 | #define CONTROL_WRITE_DTR 0x0100 | |
221 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 222 | |
39a66b8d | 223 | /* |
4cc27bd6 CS |
224 | * cp210x_get_config |
225 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
226 | * 'size' is specified in bytes. |
227 | * 'data' is a pointer to a pre-allocated array of integers large | |
228 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
229 | */ | |
4cc27bd6 | 230 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 231 | unsigned int *data, int size) |
1da177e4 LT |
232 | { |
233 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 234 | __le32 *buf; |
39a66b8d CS |
235 | int result, i, length; |
236 | ||
237 | /* Number of integers required to contain the array */ | |
238 | length = (((size - 1) | 3) + 1)/4; | |
239 | ||
53ebb3b8 | 240 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 241 | if (!buf) { |
441b62c1 | 242 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
243 | return -ENOMEM; |
244 | } | |
1da177e4 | 245 | |
39a66b8d | 246 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 247 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 248 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 249 | 0, buf, size, 300); |
1da177e4 | 250 | |
39a66b8d | 251 | /* Convert data into an array of integers */ |
ff7eb602 | 252 | for (i = 0; i < length; i++) |
39a66b8d | 253 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 254 | |
39a66b8d | 255 | kfree(buf); |
1da177e4 | 256 | |
39a66b8d | 257 | if (result != size) { |
97324955 | 258 | dbg("%s - Unable to send config request, " |
39a66b8d | 259 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 260 | __func__, request, size, result); |
39a66b8d CS |
261 | return -EPROTO; |
262 | } | |
1da177e4 | 263 | |
39a66b8d | 264 | return 0; |
1da177e4 LT |
265 | } |
266 | ||
39a66b8d | 267 | /* |
4cc27bd6 CS |
268 | * cp210x_set_config |
269 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
270 | * Values less than 16 bits wide are sent directly |
271 | * 'size' is specified in bytes. | |
272 | */ | |
4cc27bd6 | 273 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 274 | unsigned int *data, int size) |
1da177e4 LT |
275 | { |
276 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 277 | __le32 *buf; |
39a66b8d | 278 | int result, i, length; |
1da177e4 | 279 | |
39a66b8d CS |
280 | /* Number of integers required to contain the array */ |
281 | length = (((size - 1) | 3) + 1)/4; | |
282 | ||
53ebb3b8 | 283 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
284 | if (!buf) { |
285 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 286 | __func__); |
39a66b8d CS |
287 | return -ENOMEM; |
288 | } | |
289 | ||
290 | /* Array of integers into bytes */ | |
291 | for (i = 0; i < length; i++) | |
292 | buf[i] = cpu_to_le32(data[i]); | |
293 | ||
294 | if (size > 2) { | |
ff7eb602 | 295 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
296 | usb_sndctrlpipe(serial->dev, 0), |
297 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
298 | 0, buf, size, 300); | |
299 | } else { | |
ff7eb602 | 300 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
301 | usb_sndctrlpipe(serial->dev, 0), |
302 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
303 | 0, NULL, 0, 300); | |
1da177e4 LT |
304 | } |
305 | ||
39a66b8d CS |
306 | kfree(buf); |
307 | ||
308 | if ((size > 2 && result != size) || result < 0) { | |
97324955 | 309 | dbg("%s - Unable to send request, " |
39a66b8d | 310 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 311 | __func__, request, size, result); |
39a66b8d CS |
312 | return -EPROTO; |
313 | } | |
1da177e4 LT |
314 | |
315 | return 0; | |
316 | } | |
317 | ||
39a66b8d | 318 | /* |
4cc27bd6 CS |
319 | * cp210x_set_config_single |
320 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
321 | * without requiring an integer pointer |
322 | */ | |
4cc27bd6 | 323 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
324 | u8 request, unsigned int data) |
325 | { | |
4cc27bd6 | 326 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
327 | } |
328 | ||
ef8b6bcb | 329 | /* |
4cc27bd6 | 330 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
331 | * Quantises the baud rate as per AN205 Table 1 |
332 | */ | |
4cc27bd6 | 333 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) { |
ef8b6bcb CS |
334 | if (baud <= 56) baud = 0; |
335 | else if (baud <= 300) baud = 300; | |
336 | else if (baud <= 600) baud = 600; | |
337 | else if (baud <= 1200) baud = 1200; | |
338 | else if (baud <= 1800) baud = 1800; | |
339 | else if (baud <= 2400) baud = 2400; | |
340 | else if (baud <= 4000) baud = 4000; | |
341 | else if (baud <= 4803) baud = 4800; | |
342 | else if (baud <= 7207) baud = 7200; | |
343 | else if (baud <= 9612) baud = 9600; | |
344 | else if (baud <= 14428) baud = 14400; | |
345 | else if (baud <= 16062) baud = 16000; | |
346 | else if (baud <= 19250) baud = 19200; | |
347 | else if (baud <= 28912) baud = 28800; | |
348 | else if (baud <= 38601) baud = 38400; | |
349 | else if (baud <= 51558) baud = 51200; | |
350 | else if (baud <= 56280) baud = 56000; | |
351 | else if (baud <= 58053) baud = 57600; | |
352 | else if (baud <= 64111) baud = 64000; | |
353 | else if (baud <= 77608) baud = 76800; | |
354 | else if (baud <= 117028) baud = 115200; | |
355 | else if (baud <= 129347) baud = 128000; | |
356 | else if (baud <= 156868) baud = 153600; | |
357 | else if (baud <= 237832) baud = 230400; | |
358 | else if (baud <= 254234) baud = 250000; | |
359 | else if (baud <= 273066) baud = 256000; | |
360 | else if (baud <= 491520) baud = 460800; | |
361 | else if (baud <= 567138) baud = 500000; | |
362 | else if (baud <= 670254) baud = 576000; | |
363 | else if (baud <= 1053257) baud = 921600; | |
364 | else if (baud <= 1474560) baud = 1228800; | |
365 | else if (baud <= 2457600) baud = 1843200; | |
366 | else baud = 3686400; | |
367 | return baud; | |
368 | } | |
369 | ||
a509a7e4 | 370 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 371 | { |
1da177e4 LT |
372 | int result; |
373 | ||
441b62c1 | 374 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 375 | |
4cc27bd6 | 376 | if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) { |
1da177e4 | 377 | dev_err(&port->dev, "%s - Unable to enable UART\n", |
441b62c1 | 378 | __func__); |
1da177e4 LT |
379 | return -EPROTO; |
380 | } | |
381 | ||
a9013176 | 382 | result = usb_serial_generic_open(tty, port); |
2db6c769 | 383 | if (result) |
1da177e4 | 384 | return result; |
1da177e4 | 385 | |
39a66b8d | 386 | /* Configure the termios structure */ |
4cc27bd6 | 387 | cp210x_get_termios(tty, port); |
1da177e4 LT |
388 | return 0; |
389 | } | |
390 | ||
4cc27bd6 | 391 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 392 | { |
441b62c1 | 393 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 394 | |
f26788da | 395 | usb_serial_generic_close(port); |
1da177e4 | 396 | |
95bef012 ON |
397 | mutex_lock(&port->serial->disc_mutex); |
398 | if (!port->serial->disconnected) | |
4cc27bd6 | 399 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
95bef012 | 400 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
401 | } |
402 | ||
39a66b8d | 403 | /* |
4cc27bd6 | 404 | * cp210x_get_termios |
39a66b8d CS |
405 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
406 | * from the device, corrects any unsupported values, and configures the | |
407 | * termios structure to reflect the state of the device | |
408 | */ | |
4cc27bd6 | 409 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
410 | struct usb_serial_port *port) |
411 | { | |
412 | unsigned int baud; | |
413 | ||
414 | if (tty) { | |
4cc27bd6 | 415 | cp210x_get_termios_port(tty->driver_data, |
d2ad67b3 V |
416 | &tty->termios->c_cflag, &baud); |
417 | tty_encode_baud_rate(tty, baud, baud); | |
418 | } | |
419 | ||
420 | else { | |
421 | unsigned int cflag; | |
422 | cflag = 0; | |
4cc27bd6 | 423 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
424 | } |
425 | } | |
426 | ||
427 | /* | |
4cc27bd6 CS |
428 | * cp210x_get_termios_port |
429 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 430 | */ |
4cc27bd6 | 431 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 432 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 433 | { |
39a66b8d | 434 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
435 | unsigned int baud; |
436 | unsigned int bits; | |
1da177e4 | 437 | |
441b62c1 | 438 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 439 | |
4cc27bd6 | 440 | cp210x_get_config(port, CP210X_GET_BAUDDIV, &baud, 2); |
39a66b8d | 441 | /* Convert to baudrate */ |
1da177e4 | 442 | if (baud) |
4cc27bd6 | 443 | baud = cp210x_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud); |
1da177e4 | 444 | |
441b62c1 | 445 | dbg("%s - baud rate = %d", __func__, baud); |
d2ad67b3 | 446 | *baudp = baud; |
9ab0f202 | 447 | |
d2ad67b3 | 448 | cflag = *cflagp; |
1da177e4 | 449 | |
4cc27bd6 | 450 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 | 451 | cflag &= ~CSIZE; |
ff7eb602 AC |
452 | switch (bits & BITS_DATA_MASK) { |
453 | case BITS_DATA_5: | |
454 | dbg("%s - data bits = 5", __func__); | |
455 | cflag |= CS5; | |
456 | break; | |
457 | case BITS_DATA_6: | |
458 | dbg("%s - data bits = 6", __func__); | |
459 | cflag |= CS6; | |
460 | break; | |
461 | case BITS_DATA_7: | |
462 | dbg("%s - data bits = 7", __func__); | |
463 | cflag |= CS7; | |
464 | break; | |
465 | case BITS_DATA_8: | |
466 | dbg("%s - data bits = 8", __func__); | |
467 | cflag |= CS8; | |
468 | break; | |
469 | case BITS_DATA_9: | |
470 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
471 | __func__); | |
472 | cflag |= CS8; | |
473 | bits &= ~BITS_DATA_MASK; | |
474 | bits |= BITS_DATA_8; | |
4cc27bd6 | 475 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
476 | break; |
477 | default: | |
478 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
479 | cflag |= CS8; | |
480 | bits &= ~BITS_DATA_MASK; | |
481 | bits |= BITS_DATA_8; | |
4cc27bd6 | 482 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 483 | break; |
1da177e4 LT |
484 | } |
485 | ||
ff7eb602 AC |
486 | switch (bits & BITS_PARITY_MASK) { |
487 | case BITS_PARITY_NONE: | |
488 | dbg("%s - parity = NONE", __func__); | |
489 | cflag &= ~PARENB; | |
490 | break; | |
491 | case BITS_PARITY_ODD: | |
492 | dbg("%s - parity = ODD", __func__); | |
493 | cflag |= (PARENB|PARODD); | |
494 | break; | |
495 | case BITS_PARITY_EVEN: | |
496 | dbg("%s - parity = EVEN", __func__); | |
497 | cflag &= ~PARODD; | |
498 | cflag |= PARENB; | |
499 | break; | |
500 | case BITS_PARITY_MARK: | |
501 | dbg("%s - parity = MARK (not supported, disabling parity)", | |
502 | __func__); | |
503 | cflag &= ~PARENB; | |
504 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 505 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
506 | break; |
507 | case BITS_PARITY_SPACE: | |
508 | dbg("%s - parity = SPACE (not supported, disabling parity)", | |
509 | __func__); | |
510 | cflag &= ~PARENB; | |
511 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 512 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
513 | break; |
514 | default: | |
515 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
516 | cflag &= ~PARENB; | |
517 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 518 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 519 | break; |
1da177e4 LT |
520 | } |
521 | ||
522 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
523 | switch (bits & BITS_STOP_MASK) { |
524 | case BITS_STOP_1: | |
525 | dbg("%s - stop bits = 1", __func__); | |
526 | break; | |
527 | case BITS_STOP_1_5: | |
528 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
529 | __func__); | |
530 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 531 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
532 | break; |
533 | case BITS_STOP_2: | |
534 | dbg("%s - stop bits = 2", __func__); | |
535 | cflag |= CSTOPB; | |
536 | break; | |
537 | default: | |
538 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
539 | __func__); | |
540 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 541 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 542 | break; |
1da177e4 LT |
543 | } |
544 | ||
4cc27bd6 | 545 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 546 | if (modem_ctl[0] & 0x0008) { |
441b62c1 | 547 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
548 | cflag |= CRTSCTS; |
549 | } else { | |
441b62c1 | 550 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
551 | cflag &= ~CRTSCTS; |
552 | } | |
553 | ||
d2ad67b3 | 554 | *cflagp = cflag; |
1da177e4 LT |
555 | } |
556 | ||
4cc27bd6 | 557 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 558 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 559 | { |
9ab0f202 | 560 | unsigned int cflag, old_cflag; |
b2bdd1f5 | 561 | unsigned int baud = 0, bits; |
39a66b8d | 562 | unsigned int modem_ctl[4]; |
1da177e4 | 563 | |
441b62c1 | 564 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 565 | |
95da310e | 566 | if (!tty) |
1da177e4 | 567 | return; |
9ab0f202 | 568 | |
95da310e AC |
569 | tty->termios->c_cflag &= ~CMSPAR; |
570 | cflag = tty->termios->c_cflag; | |
01e96d28 | 571 | old_cflag = old_termios->c_cflag; |
4cc27bd6 | 572 | baud = cp210x_quantise_baudrate(tty_get_baud_rate(tty)); |
1da177e4 LT |
573 | |
574 | /* If the baud rate is to be updated*/ | |
ef8b6bcb CS |
575 | if (baud != tty_termios_baud_rate(old_termios) && baud != 0) { |
576 | dbg("%s - Setting baud rate to %d baud", __func__, | |
577 | baud); | |
4cc27bd6 | 578 | if (cp210x_set_config_single(port, CP210X_SET_BAUDDIV, |
ef8b6bcb | 579 | ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) { |
759f3634 | 580 | dbg("Baud rate requested not supported by device"); |
ef8b6bcb | 581 | baud = tty_termios_baud_rate(old_termios); |
1da177e4 LT |
582 | } |
583 | } | |
9ab0f202 | 584 | /* Report back the resulting baud rate */ |
95da310e | 585 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 | 586 | |
39a66b8d | 587 | /* If the number of data bits is to be updated */ |
1da177e4 | 588 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 589 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
590 | bits &= ~BITS_DATA_MASK; |
591 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
592 | case CS5: |
593 | bits |= BITS_DATA_5; | |
594 | dbg("%s - data bits = 5", __func__); | |
595 | break; | |
596 | case CS6: | |
597 | bits |= BITS_DATA_6; | |
598 | dbg("%s - data bits = 6", __func__); | |
599 | break; | |
600 | case CS7: | |
601 | bits |= BITS_DATA_7; | |
602 | dbg("%s - data bits = 7", __func__); | |
603 | break; | |
604 | case CS8: | |
605 | bits |= BITS_DATA_8; | |
606 | dbg("%s - data bits = 8", __func__); | |
607 | break; | |
608 | /*case CS9: | |
609 | bits |= BITS_DATA_9; | |
610 | dbg("%s - data bits = 9", __func__); | |
611 | break;*/ | |
612 | default: | |
4cc27bd6 | 613 | dbg("cp210x driver does not " |
1da177e4 LT |
614 | "support the number of bits requested," |
615 | " using 8 bit mode\n"); | |
616 | bits |= BITS_DATA_8; | |
617 | break; | |
618 | } | |
4cc27bd6 | 619 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 620 | dbg("Number of data bits requested " |
1da177e4 LT |
621 | "not supported by device\n"); |
622 | } | |
623 | ||
624 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
4cc27bd6 | 625 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
626 | bits &= ~BITS_PARITY_MASK; |
627 | if (cflag & PARENB) { | |
628 | if (cflag & PARODD) { | |
629 | bits |= BITS_PARITY_ODD; | |
441b62c1 | 630 | dbg("%s - parity = ODD", __func__); |
1da177e4 LT |
631 | } else { |
632 | bits |= BITS_PARITY_EVEN; | |
441b62c1 | 633 | dbg("%s - parity = EVEN", __func__); |
1da177e4 LT |
634 | } |
635 | } | |
4cc27bd6 | 636 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 637 | dbg("Parity mode not supported " |
1da177e4 LT |
638 | "by device\n"); |
639 | } | |
640 | ||
641 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 642 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
643 | bits &= ~BITS_STOP_MASK; |
644 | if (cflag & CSTOPB) { | |
645 | bits |= BITS_STOP_2; | |
441b62c1 | 646 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
647 | } else { |
648 | bits |= BITS_STOP_1; | |
441b62c1 | 649 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 650 | } |
4cc27bd6 | 651 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 652 | dbg("Number of stop bits requested " |
1da177e4 LT |
653 | "not supported by device\n"); |
654 | } | |
39a66b8d CS |
655 | |
656 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 657 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 658 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", |
441b62c1 | 659 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
660 | modem_ctl[2], modem_ctl[3]); |
661 | ||
662 | if (cflag & CRTSCTS) { | |
663 | modem_ctl[0] &= ~0x7B; | |
664 | modem_ctl[0] |= 0x09; | |
665 | modem_ctl[1] = 0x80; | |
441b62c1 | 666 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
667 | } else { |
668 | modem_ctl[0] &= ~0x7B; | |
669 | modem_ctl[0] |= 0x01; | |
670 | modem_ctl[1] |= 0x40; | |
441b62c1 | 671 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
672 | } |
673 | ||
674 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 675 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d | 676 | modem_ctl[2], modem_ctl[3]); |
4cc27bd6 | 677 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
678 | } |
679 | ||
680 | } | |
681 | ||
4cc27bd6 | 682 | static int cp210x_tiocmset (struct tty_struct *tty, struct file *file, |
39a66b8d CS |
683 | unsigned int set, unsigned int clear) |
684 | { | |
95da310e | 685 | struct usb_serial_port *port = tty->driver_data; |
4cc27bd6 | 686 | return cp210x_tiocmset_port(port, file, set, clear); |
d2ad67b3 V |
687 | } |
688 | ||
4cc27bd6 | 689 | static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file, |
d2ad67b3 V |
690 | unsigned int set, unsigned int clear) |
691 | { | |
b2bdd1f5 | 692 | unsigned int control = 0; |
39a66b8d | 693 | |
441b62c1 | 694 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
695 | |
696 | if (set & TIOCM_RTS) { | |
697 | control |= CONTROL_RTS; | |
698 | control |= CONTROL_WRITE_RTS; | |
699 | } | |
700 | if (set & TIOCM_DTR) { | |
701 | control |= CONTROL_DTR; | |
702 | control |= CONTROL_WRITE_DTR; | |
703 | } | |
704 | if (clear & TIOCM_RTS) { | |
705 | control &= ~CONTROL_RTS; | |
706 | control |= CONTROL_WRITE_RTS; | |
707 | } | |
708 | if (clear & TIOCM_DTR) { | |
709 | control &= ~CONTROL_DTR; | |
710 | control |= CONTROL_WRITE_DTR; | |
711 | } | |
712 | ||
441b62c1 | 713 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d | 714 | |
4cc27bd6 | 715 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
716 | } |
717 | ||
d94c7bd4 AC |
718 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
719 | { | |
720 | if (on) | |
721 | cp210x_tiocmset_port(p, NULL, TIOCM_DTR|TIOCM_RTS, 0); | |
722 | else | |
723 | cp210x_tiocmset_port(p, NULL, 0, TIOCM_DTR|TIOCM_RTS); | |
724 | } | |
725 | ||
4cc27bd6 | 726 | static int cp210x_tiocmget (struct tty_struct *tty, struct file *file) |
39a66b8d | 727 | { |
95da310e | 728 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
729 | unsigned int control; |
730 | int result; | |
39a66b8d | 731 | |
441b62c1 | 732 | dbg("%s - port %d", __func__, port->number); |
39a66b8d | 733 | |
4cc27bd6 | 734 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
735 | |
736 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
737 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
738 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
739 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
740 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
741 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
742 | ||
441b62c1 | 743 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
744 | |
745 | return result; | |
1da177e4 LT |
746 | } |
747 | ||
d94c7bd4 AC |
748 | static int cp210x_carrier_raised(struct usb_serial_port *p) |
749 | { | |
750 | unsigned int control; | |
751 | cp210x_get_config(p, CP210X_GET_MDMSTS, &control, 1); | |
752 | if (control & CONTROL_DCD) | |
753 | return 1; | |
754 | return 0; | |
755 | } | |
756 | ||
4cc27bd6 | 757 | static void cp210x_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 758 | { |
95da310e | 759 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 760 | unsigned int state; |
1da177e4 | 761 | |
441b62c1 | 762 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
763 | if (break_state == 0) |
764 | state = BREAK_OFF; | |
765 | else | |
766 | state = BREAK_ON; | |
441b62c1 | 767 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 768 | state == BREAK_OFF ? "off" : "on"); |
4cc27bd6 | 769 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
770 | } |
771 | ||
4cc27bd6 | 772 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 773 | { |
4cc27bd6 | 774 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 LT |
775 | usb_reset_device(serial->dev); |
776 | return 0; | |
777 | } | |
778 | ||
4cc27bd6 | 779 | static int __init cp210x_init(void) |
1da177e4 LT |
780 | { |
781 | int retval; | |
782 | ||
4cc27bd6 | 783 | retval = usb_serial_register(&cp210x_device); |
1da177e4 | 784 | if (retval) |
39a66b8d | 785 | return retval; /* Failed to register */ |
1da177e4 | 786 | |
4cc27bd6 | 787 | retval = usb_register(&cp210x_driver); |
1da177e4 | 788 | if (retval) { |
39a66b8d | 789 | /* Failed to register */ |
4cc27bd6 | 790 | usb_serial_deregister(&cp210x_device); |
1da177e4 LT |
791 | return retval; |
792 | } | |
793 | ||
39a66b8d | 794 | /* Success */ |
c197a8db GKH |
795 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
796 | DRIVER_DESC "\n"); | |
1da177e4 LT |
797 | return 0; |
798 | } | |
799 | ||
4cc27bd6 | 800 | static void __exit cp210x_exit(void) |
1da177e4 | 801 | { |
4cc27bd6 CS |
802 | usb_deregister(&cp210x_driver); |
803 | usb_serial_deregister(&cp210x_device); | |
1da177e4 LT |
804 | } |
805 | ||
4cc27bd6 CS |
806 | module_init(cp210x_init); |
807 | module_exit(cp210x_exit); | |
1da177e4 LT |
808 | |
809 | MODULE_DESCRIPTION(DRIVER_DESC); | |
810 | MODULE_VERSION(DRIVER_VERSION); | |
811 | MODULE_LICENSE("GPL"); | |
812 | ||
813 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
814 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |