Commit | Line | Data |
---|---|---|
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*); |
60b33c13 | 44 | static int cp210x_tiocmget(struct tty_struct *); |
20b9d177 AC |
45 | static int cp210x_tiocmset(struct tty_struct *, unsigned int, unsigned int); |
46 | static int cp210x_tiocmset_port(struct usb_serial_port *port, | |
d2ad67b3 | 47 | unsigned int, unsigned int); |
4cc27bd6 CS |
48 | static void cp210x_break_ctl(struct tty_struct *, int); |
49 | static int cp210x_startup(struct usb_serial *); | |
d94c7bd4 | 50 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on); |
1da177e4 | 51 | |
90ab5ee9 | 52 | static bool debug; |
1da177e4 | 53 | |
7d40d7e8 | 54 | static const struct usb_device_id id_table[] = { |
2f1136d1 | 55 | { USB_DEVICE(0x045B, 0x0053) }, /* Renesas RX610 RX-Stick */ |
5091b587 | 56 | { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ |
59fba744 | 57 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
5b22a32e | 58 | { USB_DEVICE(0x0489, 0xE003) }, /* 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 */ |
eefd9029 CS |
62 | { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */ |
63 | { USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */ | |
198b9517 | 64 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 65 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 66 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
198b9517 | 67 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
68 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
69 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
b7c7cbc8 | 70 | { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */ |
0601e116 AK |
71 | { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */ |
72 | { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ | |
5de8b3ac | 73 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 74 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
eefd9029 CS |
75 | { USB_DEVICE(0x10C4, 0x8044) }, /* Cygnal Debug Adapter */ |
76 | { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */ | |
92f5cae2 | 77 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 78 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 79 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
eefd9029 | 80 | { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */ |
e988fc8a CS |
81 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
82 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 83 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 84 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 85 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 86 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
8bf16ba7 | 87 | { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */ |
fc4bd64c JH |
88 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
89 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
0bf7a81c | 90 | { USB_DEVICE(0x10C4, 0x8156) }, /* B&G H3000 link cable */ |
e988fc8a | 91 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
eefd9029 | 92 | { USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */ |
c6535668 | 93 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 94 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
08e87d0d | 95 | { USB_DEVICE(0x10C4, 0x81A9) }, /* Multiplex RC Interface */ |
59fba744 | 96 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
eefd9029 | 97 | { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */ |
78001e3d BS |
98 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
99 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 100 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
bd07c551 | 101 | { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */ |
b7c7cbc8 | 102 | { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ |
78001e3d | 103 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 104 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
25985edc | 105 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demonstration module */ |
c851e83f | 106 | { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */ |
b7c7cbc8 | 107 | { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ |
ba0f332c | 108 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
8bf16ba7 | 109 | { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */ |
881e3c98 | 110 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
faea63f7 | 111 | { USB_DEVICE(0x10C4, 0x83D8) }, /* DekTec DTA Plus VHF/UHF Booster/Attenuator */ |
8bf16ba7 | 112 | { USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */ |
faea63f7 | 113 | { USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */ |
d23bac9f | 114 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
541e05ec | 115 | { USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */ |
4eff0b40 CS |
116 | { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */ |
117 | { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */ | |
118 | { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */ | |
119 | { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */ | |
e988fc8a | 120 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 121 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
eefd9029 | 122 | { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */ |
5de8b3ac CS |
123 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
124 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
125 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
126 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 127 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 128 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 129 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 130 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
5de8b3ac | 131 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 132 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
356c5a48 AIB |
133 | { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */ |
134 | { USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */ | |
135 | { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */ | |
136 | { USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */ | |
541e05ec CS |
137 | { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ |
138 | { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ | |
139 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ | |
93ad03d6 | 140 | { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */ |
541e05ec | 141 | { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ |
39a66b8d | 142 | { } /* Terminating Entry */ |
1da177e4 LT |
143 | }; |
144 | ||
ff7eb602 | 145 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 146 | |
4cc27bd6 CS |
147 | static struct usb_driver cp210x_driver = { |
148 | .name = "cp210x", | |
1da177e4 LT |
149 | .probe = usb_serial_probe, |
150 | .disconnect = usb_serial_disconnect, | |
151 | .id_table = id_table, | |
ba9dc657 | 152 | .no_dynamic_id = 1, |
1da177e4 LT |
153 | }; |
154 | ||
4cc27bd6 | 155 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
156 | .driver = { |
157 | .owner = THIS_MODULE, | |
4cc27bd6 | 158 | .name = "cp210x", |
18fcac35 | 159 | }, |
4cc27bd6 | 160 | .usb_driver = &cp210x_driver, |
1da177e4 | 161 | .id_table = id_table, |
1da177e4 | 162 | .num_ports = 1, |
aea006b9 | 163 | .bulk_in_size = 256, |
d4e598f6 | 164 | .bulk_out_size = 256, |
4cc27bd6 CS |
165 | .open = cp210x_open, |
166 | .close = cp210x_close, | |
167 | .break_ctl = cp210x_break_ctl, | |
168 | .set_termios = cp210x_set_termios, | |
169 | .tiocmget = cp210x_tiocmget, | |
170 | .tiocmset = cp210x_tiocmset, | |
171 | .attach = cp210x_startup, | |
d14fc1a7 | 172 | .dtr_rts = cp210x_dtr_rts |
1da177e4 LT |
173 | }; |
174 | ||
39a66b8d | 175 | /* Config request types */ |
1da177e4 LT |
176 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
177 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
178 | ||
93ef1f1f CS |
179 | /* Config request codes */ |
180 | #define CP210X_IFC_ENABLE 0x00 | |
181 | #define CP210X_SET_BAUDDIV 0x01 | |
182 | #define CP210X_GET_BAUDDIV 0x02 | |
183 | #define CP210X_SET_LINE_CTL 0x03 | |
184 | #define CP210X_GET_LINE_CTL 0x04 | |
185 | #define CP210X_SET_BREAK 0x05 | |
186 | #define CP210X_IMM_CHAR 0x06 | |
187 | #define CP210X_SET_MHS 0x07 | |
188 | #define CP210X_GET_MDMSTS 0x08 | |
189 | #define CP210X_SET_XON 0x09 | |
190 | #define CP210X_SET_XOFF 0x0A | |
191 | #define CP210X_SET_EVENTMASK 0x0B | |
192 | #define CP210X_GET_EVENTMASK 0x0C | |
193 | #define CP210X_SET_CHAR 0x0D | |
194 | #define CP210X_GET_CHARS 0x0E | |
195 | #define CP210X_GET_PROPS 0x0F | |
196 | #define CP210X_GET_COMM_STATUS 0x10 | |
197 | #define CP210X_RESET 0x11 | |
198 | #define CP210X_PURGE 0x12 | |
199 | #define CP210X_SET_FLOW 0x13 | |
200 | #define CP210X_GET_FLOW 0x14 | |
201 | #define CP210X_EMBED_EVENTS 0x15 | |
202 | #define CP210X_GET_EVENTSTATE 0x16 | |
203 | #define CP210X_SET_CHARS 0x19 | |
204 | ||
205 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
206 | #define UART_ENABLE 0x0001 |
207 | #define UART_DISABLE 0x0000 | |
208 | ||
93ef1f1f | 209 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
210 | #define BAUD_RATE_GEN_FREQ 0x384000 |
211 | ||
93ef1f1f | 212 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 213 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 214 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
215 | #define BITS_DATA_6 0X0600 |
216 | #define BITS_DATA_7 0X0700 | |
217 | #define BITS_DATA_8 0X0800 | |
218 | #define BITS_DATA_9 0X0900 | |
219 | ||
220 | #define BITS_PARITY_MASK 0x00f0 | |
221 | #define BITS_PARITY_NONE 0x0000 | |
222 | #define BITS_PARITY_ODD 0x0010 | |
223 | #define BITS_PARITY_EVEN 0x0020 | |
224 | #define BITS_PARITY_MARK 0x0030 | |
225 | #define BITS_PARITY_SPACE 0x0040 | |
226 | ||
227 | #define BITS_STOP_MASK 0x000f | |
228 | #define BITS_STOP_1 0x0000 | |
229 | #define BITS_STOP_1_5 0x0001 | |
230 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 231 | |
93ef1f1f | 232 | /* CP210X_SET_BREAK */ |
72916791 CS |
233 | #define BREAK_ON 0x0001 |
234 | #define BREAK_OFF 0x0000 | |
1da177e4 | 235 | |
93ef1f1f | 236 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
237 | #define CONTROL_DTR 0x0001 |
238 | #define CONTROL_RTS 0x0002 | |
239 | #define CONTROL_CTS 0x0010 | |
240 | #define CONTROL_DSR 0x0020 | |
241 | #define CONTROL_RING 0x0040 | |
242 | #define CONTROL_DCD 0x0080 | |
243 | #define CONTROL_WRITE_DTR 0x0100 | |
244 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 245 | |
39a66b8d | 246 | /* |
4cc27bd6 CS |
247 | * cp210x_get_config |
248 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
249 | * 'size' is specified in bytes. |
250 | * 'data' is a pointer to a pre-allocated array of integers large | |
251 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
252 | */ | |
4cc27bd6 | 253 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 254 | unsigned int *data, int size) |
1da177e4 LT |
255 | { |
256 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 257 | __le32 *buf; |
39a66b8d CS |
258 | int result, i, length; |
259 | ||
260 | /* Number of integers required to contain the array */ | |
261 | length = (((size - 1) | 3) + 1)/4; | |
262 | ||
53ebb3b8 | 263 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 264 | if (!buf) { |
441b62c1 | 265 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
266 | return -ENOMEM; |
267 | } | |
1da177e4 | 268 | |
39a66b8d | 269 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 270 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 271 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 272 | 0, buf, size, 300); |
1da177e4 | 273 | |
39a66b8d | 274 | /* Convert data into an array of integers */ |
ff7eb602 | 275 | for (i = 0; i < length; i++) |
39a66b8d | 276 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 277 | |
39a66b8d | 278 | kfree(buf); |
1da177e4 | 279 | |
39a66b8d | 280 | if (result != size) { |
97324955 | 281 | dbg("%s - Unable to send config request, " |
39a66b8d | 282 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 283 | __func__, request, size, result); |
2479e2a9 JH |
284 | if (result > 0) |
285 | result = -EPROTO; | |
286 | ||
287 | return result; | |
39a66b8d | 288 | } |
1da177e4 | 289 | |
39a66b8d | 290 | return 0; |
1da177e4 LT |
291 | } |
292 | ||
39a66b8d | 293 | /* |
4cc27bd6 CS |
294 | * cp210x_set_config |
295 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
296 | * Values less than 16 bits wide are sent directly |
297 | * 'size' is specified in bytes. | |
298 | */ | |
4cc27bd6 | 299 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 300 | unsigned int *data, int size) |
1da177e4 LT |
301 | { |
302 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 303 | __le32 *buf; |
39a66b8d | 304 | int result, i, length; |
1da177e4 | 305 | |
39a66b8d CS |
306 | /* Number of integers required to contain the array */ |
307 | length = (((size - 1) | 3) + 1)/4; | |
308 | ||
53ebb3b8 | 309 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
310 | if (!buf) { |
311 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 312 | __func__); |
39a66b8d CS |
313 | return -ENOMEM; |
314 | } | |
315 | ||
316 | /* Array of integers into bytes */ | |
317 | for (i = 0; i < length; i++) | |
318 | buf[i] = cpu_to_le32(data[i]); | |
319 | ||
320 | if (size > 2) { | |
ff7eb602 | 321 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
322 | usb_sndctrlpipe(serial->dev, 0), |
323 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
324 | 0, buf, size, 300); | |
325 | } else { | |
ff7eb602 | 326 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
327 | usb_sndctrlpipe(serial->dev, 0), |
328 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
329 | 0, NULL, 0, 300); | |
1da177e4 LT |
330 | } |
331 | ||
39a66b8d CS |
332 | kfree(buf); |
333 | ||
334 | if ((size > 2 && result != size) || result < 0) { | |
97324955 | 335 | dbg("%s - Unable to send request, " |
39a66b8d | 336 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 337 | __func__, request, size, result); |
2479e2a9 JH |
338 | if (result > 0) |
339 | result = -EPROTO; | |
340 | ||
341 | return result; | |
39a66b8d | 342 | } |
1da177e4 LT |
343 | |
344 | return 0; | |
345 | } | |
346 | ||
39a66b8d | 347 | /* |
4cc27bd6 CS |
348 | * cp210x_set_config_single |
349 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
350 | * without requiring an integer pointer |
351 | */ | |
4cc27bd6 | 352 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
353 | u8 request, unsigned int data) |
354 | { | |
4cc27bd6 | 355 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
356 | } |
357 | ||
ef8b6bcb | 358 | /* |
4cc27bd6 | 359 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
360 | * Quantises the baud rate as per AN205 Table 1 |
361 | */ | |
4cc27bd6 | 362 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) { |
ef8b6bcb CS |
363 | if (baud <= 56) baud = 0; |
364 | else if (baud <= 300) baud = 300; | |
365 | else if (baud <= 600) baud = 600; | |
366 | else if (baud <= 1200) baud = 1200; | |
367 | else if (baud <= 1800) baud = 1800; | |
368 | else if (baud <= 2400) baud = 2400; | |
369 | else if (baud <= 4000) baud = 4000; | |
370 | else if (baud <= 4803) baud = 4800; | |
371 | else if (baud <= 7207) baud = 7200; | |
372 | else if (baud <= 9612) baud = 9600; | |
373 | else if (baud <= 14428) baud = 14400; | |
374 | else if (baud <= 16062) baud = 16000; | |
375 | else if (baud <= 19250) baud = 19200; | |
376 | else if (baud <= 28912) baud = 28800; | |
377 | else if (baud <= 38601) baud = 38400; | |
378 | else if (baud <= 51558) baud = 51200; | |
379 | else if (baud <= 56280) baud = 56000; | |
380 | else if (baud <= 58053) baud = 57600; | |
381 | else if (baud <= 64111) baud = 64000; | |
382 | else if (baud <= 77608) baud = 76800; | |
383 | else if (baud <= 117028) baud = 115200; | |
384 | else if (baud <= 129347) baud = 128000; | |
385 | else if (baud <= 156868) baud = 153600; | |
386 | else if (baud <= 237832) baud = 230400; | |
387 | else if (baud <= 254234) baud = 250000; | |
388 | else if (baud <= 273066) baud = 256000; | |
389 | else if (baud <= 491520) baud = 460800; | |
390 | else if (baud <= 567138) baud = 500000; | |
391 | else if (baud <= 670254) baud = 576000; | |
392 | else if (baud <= 1053257) baud = 921600; | |
393 | else if (baud <= 1474560) baud = 1228800; | |
394 | else if (baud <= 2457600) baud = 1843200; | |
395 | else baud = 3686400; | |
396 | return baud; | |
397 | } | |
398 | ||
a509a7e4 | 399 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 400 | { |
1da177e4 LT |
401 | int result; |
402 | ||
441b62c1 | 403 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 404 | |
2479e2a9 JH |
405 | result = cp210x_set_config_single(port, CP210X_IFC_ENABLE, |
406 | UART_ENABLE); | |
407 | if (result) { | |
408 | dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); | |
409 | return result; | |
1da177e4 LT |
410 | } |
411 | ||
a9013176 | 412 | result = usb_serial_generic_open(tty, port); |
2db6c769 | 413 | if (result) |
1da177e4 | 414 | return result; |
1da177e4 | 415 | |
39a66b8d | 416 | /* Configure the termios structure */ |
4cc27bd6 | 417 | cp210x_get_termios(tty, port); |
1da177e4 LT |
418 | return 0; |
419 | } | |
420 | ||
4cc27bd6 | 421 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 422 | { |
441b62c1 | 423 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 424 | |
f26788da | 425 | usb_serial_generic_close(port); |
1da177e4 | 426 | |
95bef012 ON |
427 | mutex_lock(&port->serial->disc_mutex); |
428 | if (!port->serial->disconnected) | |
4cc27bd6 | 429 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
95bef012 | 430 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
431 | } |
432 | ||
39a66b8d | 433 | /* |
4cc27bd6 | 434 | * cp210x_get_termios |
39a66b8d CS |
435 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
436 | * from the device, corrects any unsupported values, and configures the | |
437 | * termios structure to reflect the state of the device | |
438 | */ | |
4cc27bd6 | 439 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
440 | struct usb_serial_port *port) |
441 | { | |
442 | unsigned int baud; | |
443 | ||
444 | if (tty) { | |
4cc27bd6 | 445 | cp210x_get_termios_port(tty->driver_data, |
d2ad67b3 V |
446 | &tty->termios->c_cflag, &baud); |
447 | tty_encode_baud_rate(tty, baud, baud); | |
448 | } | |
449 | ||
450 | else { | |
451 | unsigned int cflag; | |
452 | cflag = 0; | |
4cc27bd6 | 453 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
454 | } |
455 | } | |
456 | ||
457 | /* | |
4cc27bd6 CS |
458 | * cp210x_get_termios_port |
459 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 460 | */ |
4cc27bd6 | 461 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 462 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 463 | { |
39a66b8d | 464 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
465 | unsigned int baud; |
466 | unsigned int bits; | |
1da177e4 | 467 | |
441b62c1 | 468 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 469 | |
4cc27bd6 | 470 | cp210x_get_config(port, CP210X_GET_BAUDDIV, &baud, 2); |
39a66b8d | 471 | /* Convert to baudrate */ |
1da177e4 | 472 | if (baud) |
4cc27bd6 | 473 | baud = cp210x_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud); |
1da177e4 | 474 | |
441b62c1 | 475 | dbg("%s - baud rate = %d", __func__, baud); |
d2ad67b3 | 476 | *baudp = baud; |
9ab0f202 | 477 | |
d2ad67b3 | 478 | cflag = *cflagp; |
1da177e4 | 479 | |
4cc27bd6 | 480 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 | 481 | cflag &= ~CSIZE; |
ff7eb602 AC |
482 | switch (bits & BITS_DATA_MASK) { |
483 | case BITS_DATA_5: | |
484 | dbg("%s - data bits = 5", __func__); | |
485 | cflag |= CS5; | |
486 | break; | |
487 | case BITS_DATA_6: | |
488 | dbg("%s - data bits = 6", __func__); | |
489 | cflag |= CS6; | |
490 | break; | |
491 | case BITS_DATA_7: | |
492 | dbg("%s - data bits = 7", __func__); | |
493 | cflag |= CS7; | |
494 | break; | |
495 | case BITS_DATA_8: | |
496 | dbg("%s - data bits = 8", __func__); | |
497 | cflag |= CS8; | |
498 | break; | |
499 | case BITS_DATA_9: | |
500 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
501 | __func__); | |
502 | cflag |= CS8; | |
503 | bits &= ~BITS_DATA_MASK; | |
504 | bits |= BITS_DATA_8; | |
4cc27bd6 | 505 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
506 | break; |
507 | default: | |
508 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
509 | cflag |= CS8; | |
510 | bits &= ~BITS_DATA_MASK; | |
511 | bits |= BITS_DATA_8; | |
4cc27bd6 | 512 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 513 | break; |
1da177e4 LT |
514 | } |
515 | ||
ff7eb602 AC |
516 | switch (bits & BITS_PARITY_MASK) { |
517 | case BITS_PARITY_NONE: | |
518 | dbg("%s - parity = NONE", __func__); | |
519 | cflag &= ~PARENB; | |
520 | break; | |
521 | case BITS_PARITY_ODD: | |
522 | dbg("%s - parity = ODD", __func__); | |
523 | cflag |= (PARENB|PARODD); | |
524 | break; | |
525 | case BITS_PARITY_EVEN: | |
526 | dbg("%s - parity = EVEN", __func__); | |
527 | cflag &= ~PARODD; | |
528 | cflag |= PARENB; | |
529 | break; | |
530 | case BITS_PARITY_MARK: | |
4b6181ca RK |
531 | dbg("%s - parity = MARK", __func__); |
532 | cflag |= (PARENB|PARODD|CMSPAR); | |
ff7eb602 AC |
533 | break; |
534 | case BITS_PARITY_SPACE: | |
4b6181ca RK |
535 | dbg("%s - parity = SPACE", __func__); |
536 | cflag &= ~PARODD; | |
537 | cflag |= (PARENB|CMSPAR); | |
ff7eb602 AC |
538 | break; |
539 | default: | |
540 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
541 | cflag &= ~PARENB; | |
542 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 543 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 544 | break; |
1da177e4 LT |
545 | } |
546 | ||
547 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
548 | switch (bits & BITS_STOP_MASK) { |
549 | case BITS_STOP_1: | |
550 | dbg("%s - stop bits = 1", __func__); | |
551 | break; | |
552 | case BITS_STOP_1_5: | |
553 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
554 | __func__); | |
555 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 556 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
557 | break; |
558 | case BITS_STOP_2: | |
559 | dbg("%s - stop bits = 2", __func__); | |
560 | cflag |= CSTOPB; | |
561 | break; | |
562 | default: | |
563 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
564 | __func__); | |
565 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 566 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 567 | break; |
1da177e4 LT |
568 | } |
569 | ||
4cc27bd6 | 570 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 571 | if (modem_ctl[0] & 0x0008) { |
441b62c1 | 572 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
573 | cflag |= CRTSCTS; |
574 | } else { | |
441b62c1 | 575 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
576 | cflag &= ~CRTSCTS; |
577 | } | |
578 | ||
d2ad67b3 | 579 | *cflagp = cflag; |
1da177e4 LT |
580 | } |
581 | ||
4cc27bd6 | 582 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 583 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 584 | { |
9ab0f202 | 585 | unsigned int cflag, old_cflag; |
b2bdd1f5 | 586 | unsigned int baud = 0, bits; |
39a66b8d | 587 | unsigned int modem_ctl[4]; |
1da177e4 | 588 | |
441b62c1 | 589 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 590 | |
95da310e | 591 | if (!tty) |
1da177e4 | 592 | return; |
9ab0f202 | 593 | |
95da310e | 594 | cflag = tty->termios->c_cflag; |
01e96d28 | 595 | old_cflag = old_termios->c_cflag; |
4cc27bd6 | 596 | baud = cp210x_quantise_baudrate(tty_get_baud_rate(tty)); |
1da177e4 LT |
597 | |
598 | /* If the baud rate is to be updated*/ | |
ef8b6bcb CS |
599 | if (baud != tty_termios_baud_rate(old_termios) && baud != 0) { |
600 | dbg("%s - Setting baud rate to %d baud", __func__, | |
601 | baud); | |
4cc27bd6 | 602 | if (cp210x_set_config_single(port, CP210X_SET_BAUDDIV, |
ef8b6bcb | 603 | ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) { |
759f3634 | 604 | dbg("Baud rate requested not supported by device"); |
ef8b6bcb | 605 | baud = tty_termios_baud_rate(old_termios); |
1da177e4 LT |
606 | } |
607 | } | |
9ab0f202 | 608 | /* Report back the resulting baud rate */ |
95da310e | 609 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 | 610 | |
39a66b8d | 611 | /* If the number of data bits is to be updated */ |
1da177e4 | 612 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 613 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
614 | bits &= ~BITS_DATA_MASK; |
615 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
616 | case CS5: |
617 | bits |= BITS_DATA_5; | |
618 | dbg("%s - data bits = 5", __func__); | |
619 | break; | |
620 | case CS6: | |
621 | bits |= BITS_DATA_6; | |
622 | dbg("%s - data bits = 6", __func__); | |
623 | break; | |
624 | case CS7: | |
625 | bits |= BITS_DATA_7; | |
626 | dbg("%s - data bits = 7", __func__); | |
627 | break; | |
628 | case CS8: | |
629 | bits |= BITS_DATA_8; | |
630 | dbg("%s - data bits = 8", __func__); | |
631 | break; | |
632 | /*case CS9: | |
633 | bits |= BITS_DATA_9; | |
634 | dbg("%s - data bits = 9", __func__); | |
635 | break;*/ | |
636 | default: | |
4cc27bd6 | 637 | dbg("cp210x driver does not " |
1da177e4 LT |
638 | "support the number of bits requested," |
639 | " using 8 bit mode\n"); | |
640 | bits |= BITS_DATA_8; | |
641 | break; | |
642 | } | |
4cc27bd6 | 643 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 644 | dbg("Number of data bits requested " |
1da177e4 LT |
645 | "not supported by device\n"); |
646 | } | |
647 | ||
4b6181ca RK |
648 | if ((cflag & (PARENB|PARODD|CMSPAR)) != |
649 | (old_cflag & (PARENB|PARODD|CMSPAR))) { | |
4cc27bd6 | 650 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
651 | bits &= ~BITS_PARITY_MASK; |
652 | if (cflag & PARENB) { | |
4b6181ca RK |
653 | if (cflag & CMSPAR) { |
654 | if (cflag & PARODD) { | |
655 | bits |= BITS_PARITY_MARK; | |
656 | dbg("%s - parity = MARK", __func__); | |
657 | } else { | |
658 | bits |= BITS_PARITY_SPACE; | |
659 | dbg("%s - parity = SPACE", __func__); | |
660 | } | |
1da177e4 | 661 | } else { |
4b6181ca RK |
662 | if (cflag & PARODD) { |
663 | bits |= BITS_PARITY_ODD; | |
664 | dbg("%s - parity = ODD", __func__); | |
665 | } else { | |
666 | bits |= BITS_PARITY_EVEN; | |
667 | dbg("%s - parity = EVEN", __func__); | |
668 | } | |
1da177e4 LT |
669 | } |
670 | } | |
4cc27bd6 | 671 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 672 | dbg("Parity mode not supported " |
1da177e4 LT |
673 | "by device\n"); |
674 | } | |
675 | ||
676 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 677 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
678 | bits &= ~BITS_STOP_MASK; |
679 | if (cflag & CSTOPB) { | |
680 | bits |= BITS_STOP_2; | |
441b62c1 | 681 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
682 | } else { |
683 | bits |= BITS_STOP_1; | |
441b62c1 | 684 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 685 | } |
4cc27bd6 | 686 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 687 | dbg("Number of stop bits requested " |
1da177e4 LT |
688 | "not supported by device\n"); |
689 | } | |
39a66b8d CS |
690 | |
691 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 692 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 693 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", |
441b62c1 | 694 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
695 | modem_ctl[2], modem_ctl[3]); |
696 | ||
697 | if (cflag & CRTSCTS) { | |
698 | modem_ctl[0] &= ~0x7B; | |
699 | modem_ctl[0] |= 0x09; | |
700 | modem_ctl[1] = 0x80; | |
441b62c1 | 701 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
702 | } else { |
703 | modem_ctl[0] &= ~0x7B; | |
704 | modem_ctl[0] |= 0x01; | |
705 | modem_ctl[1] |= 0x40; | |
441b62c1 | 706 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
707 | } |
708 | ||
709 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 710 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d | 711 | modem_ctl[2], modem_ctl[3]); |
4cc27bd6 | 712 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
713 | } |
714 | ||
715 | } | |
716 | ||
20b9d177 | 717 | static int cp210x_tiocmset (struct tty_struct *tty, |
39a66b8d CS |
718 | unsigned int set, unsigned int clear) |
719 | { | |
95da310e | 720 | struct usb_serial_port *port = tty->driver_data; |
20b9d177 | 721 | return cp210x_tiocmset_port(port, set, clear); |
d2ad67b3 V |
722 | } |
723 | ||
20b9d177 | 724 | static int cp210x_tiocmset_port(struct usb_serial_port *port, |
d2ad67b3 V |
725 | unsigned int set, unsigned int clear) |
726 | { | |
b2bdd1f5 | 727 | unsigned int control = 0; |
39a66b8d | 728 | |
441b62c1 | 729 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
730 | |
731 | if (set & TIOCM_RTS) { | |
732 | control |= CONTROL_RTS; | |
733 | control |= CONTROL_WRITE_RTS; | |
734 | } | |
735 | if (set & TIOCM_DTR) { | |
736 | control |= CONTROL_DTR; | |
737 | control |= CONTROL_WRITE_DTR; | |
738 | } | |
739 | if (clear & TIOCM_RTS) { | |
740 | control &= ~CONTROL_RTS; | |
741 | control |= CONTROL_WRITE_RTS; | |
742 | } | |
743 | if (clear & TIOCM_DTR) { | |
744 | control &= ~CONTROL_DTR; | |
745 | control |= CONTROL_WRITE_DTR; | |
746 | } | |
747 | ||
441b62c1 | 748 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d | 749 | |
4cc27bd6 | 750 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
751 | } |
752 | ||
d94c7bd4 AC |
753 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
754 | { | |
755 | if (on) | |
20b9d177 | 756 | cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0); |
d94c7bd4 | 757 | else |
20b9d177 | 758 | cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS); |
d94c7bd4 AC |
759 | } |
760 | ||
60b33c13 | 761 | static int cp210x_tiocmget (struct tty_struct *tty) |
39a66b8d | 762 | { |
95da310e | 763 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
764 | unsigned int control; |
765 | int result; | |
39a66b8d | 766 | |
441b62c1 | 767 | dbg("%s - port %d", __func__, port->number); |
39a66b8d | 768 | |
4cc27bd6 | 769 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
770 | |
771 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
772 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
773 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
774 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
775 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
776 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
777 | ||
441b62c1 | 778 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
779 | |
780 | return result; | |
1da177e4 LT |
781 | } |
782 | ||
4cc27bd6 | 783 | static void cp210x_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 784 | { |
95da310e | 785 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 786 | unsigned int state; |
1da177e4 | 787 | |
441b62c1 | 788 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
789 | if (break_state == 0) |
790 | state = BREAK_OFF; | |
791 | else | |
792 | state = BREAK_ON; | |
441b62c1 | 793 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 794 | state == BREAK_OFF ? "off" : "on"); |
4cc27bd6 | 795 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
796 | } |
797 | ||
4cc27bd6 | 798 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 799 | { |
4cc27bd6 | 800 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 LT |
801 | usb_reset_device(serial->dev); |
802 | return 0; | |
803 | } | |
804 | ||
4cc27bd6 | 805 | static int __init cp210x_init(void) |
1da177e4 LT |
806 | { |
807 | int retval; | |
808 | ||
4cc27bd6 | 809 | retval = usb_serial_register(&cp210x_device); |
1da177e4 | 810 | if (retval) |
39a66b8d | 811 | return retval; /* Failed to register */ |
1da177e4 | 812 | |
4cc27bd6 | 813 | retval = usb_register(&cp210x_driver); |
1da177e4 | 814 | if (retval) { |
39a66b8d | 815 | /* Failed to register */ |
4cc27bd6 | 816 | usb_serial_deregister(&cp210x_device); |
1da177e4 LT |
817 | return retval; |
818 | } | |
819 | ||
39a66b8d | 820 | /* Success */ |
c197a8db GKH |
821 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
822 | DRIVER_DESC "\n"); | |
1da177e4 LT |
823 | return 0; |
824 | } | |
825 | ||
4cc27bd6 | 826 | static void __exit cp210x_exit(void) |
1da177e4 | 827 | { |
4cc27bd6 CS |
828 | usb_deregister(&cp210x_driver); |
829 | usb_serial_deregister(&cp210x_device); | |
1da177e4 LT |
830 | } |
831 | ||
4cc27bd6 CS |
832 | module_init(cp210x_init); |
833 | module_exit(cp210x_exit); | |
1da177e4 LT |
834 | |
835 | MODULE_DESCRIPTION(DRIVER_DESC); | |
836 | MODULE_VERSION(DRIVER_VERSION); | |
837 | MODULE_LICENSE("GPL"); | |
838 | ||
839 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
840 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |