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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); |
e5990874 JH |
42 | static void cp210x_change_speed(struct tty_struct *, struct usb_serial_port *, |
43 | struct ktermios *); | |
4cc27bd6 | 44 | static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *, |
95da310e | 45 | struct ktermios*); |
60b33c13 | 46 | static int cp210x_tiocmget(struct tty_struct *); |
20b9d177 AC |
47 | static int cp210x_tiocmset(struct tty_struct *, unsigned int, unsigned int); |
48 | static int cp210x_tiocmset_port(struct usb_serial_port *port, | |
d2ad67b3 | 49 | unsigned int, unsigned int); |
4cc27bd6 CS |
50 | static void cp210x_break_ctl(struct tty_struct *, int); |
51 | static int cp210x_startup(struct usb_serial *); | |
d94c7bd4 | 52 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on); |
1da177e4 | 53 | |
90ab5ee9 | 54 | static bool debug; |
1da177e4 | 55 | |
7d40d7e8 | 56 | static const struct usb_device_id id_table[] = { |
2f1136d1 | 57 | { USB_DEVICE(0x045B, 0x0053) }, /* Renesas RX610 RX-Stick */ |
5091b587 | 58 | { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ |
59fba744 | 59 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
5b22a32e | 60 | { USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
b7c7cbc8 | 61 | { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ |
1f4f714f | 62 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
b7c7cbc8 | 63 | { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ |
eefd9029 CS |
64 | { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */ |
65 | { USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */ | |
198b9517 | 66 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 67 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 68 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
198b9517 | 69 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
70 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
71 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
b7c7cbc8 | 72 | { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */ |
0601e116 AK |
73 | { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */ |
74 | { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ | |
5de8b3ac | 75 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 76 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
eefd9029 CS |
77 | { USB_DEVICE(0x10C4, 0x8044) }, /* Cygnal Debug Adapter */ |
78 | { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */ | |
92f5cae2 | 79 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 80 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 81 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
eefd9029 | 82 | { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */ |
e988fc8a CS |
83 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
84 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
92f5cae2 | 85 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 86 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 87 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 88 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
8bf16ba7 | 89 | { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */ |
fc4bd64c JH |
90 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
91 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
0bf7a81c | 92 | { USB_DEVICE(0x10C4, 0x8156) }, /* B&G H3000 link cable */ |
e988fc8a | 93 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
eefd9029 | 94 | { USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */ |
c6535668 | 95 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 96 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
08e87d0d | 97 | { USB_DEVICE(0x10C4, 0x81A9) }, /* Multiplex RC Interface */ |
59fba744 | 98 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
eefd9029 | 99 | { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */ |
78001e3d BS |
100 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
101 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 102 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
bd07c551 | 103 | { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */ |
b7c7cbc8 | 104 | { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ |
78001e3d | 105 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 106 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
25985edc | 107 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demonstration module */ |
c851e83f | 108 | { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */ |
b7c7cbc8 | 109 | { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ |
ba0f332c | 110 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
8bf16ba7 | 111 | { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */ |
881e3c98 | 112 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
faea63f7 | 113 | { USB_DEVICE(0x10C4, 0x83D8) }, /* DekTec DTA Plus VHF/UHF Booster/Attenuator */ |
8bf16ba7 | 114 | { USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */ |
faea63f7 | 115 | { USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */ |
d23bac9f | 116 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
541e05ec | 117 | { USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */ |
4eff0b40 CS |
118 | { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */ |
119 | { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */ | |
120 | { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */ | |
121 | { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */ | |
e988fc8a | 122 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 123 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
eefd9029 | 124 | { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */ |
5de8b3ac CS |
125 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
126 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
127 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
128 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 129 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 130 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 131 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 132 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
5de8b3ac | 133 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 134 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
356c5a48 AIB |
135 | { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */ |
136 | { USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */ | |
137 | { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */ | |
138 | { USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */ | |
541e05ec CS |
139 | { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ |
140 | { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ | |
141 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ | |
93ad03d6 | 142 | { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */ |
791b7d7c | 143 | { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */ |
541e05ec | 144 | { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ |
39a66b8d | 145 | { } /* Terminating Entry */ |
1da177e4 LT |
146 | }; |
147 | ||
ff7eb602 | 148 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 149 | |
4cc27bd6 CS |
150 | static struct usb_driver cp210x_driver = { |
151 | .name = "cp210x", | |
1da177e4 LT |
152 | .probe = usb_serial_probe, |
153 | .disconnect = usb_serial_disconnect, | |
154 | .id_table = id_table, | |
ba9dc657 | 155 | .no_dynamic_id = 1, |
1da177e4 LT |
156 | }; |
157 | ||
4cc27bd6 | 158 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
159 | .driver = { |
160 | .owner = THIS_MODULE, | |
4cc27bd6 | 161 | .name = "cp210x", |
18fcac35 | 162 | }, |
4cc27bd6 | 163 | .usb_driver = &cp210x_driver, |
1da177e4 | 164 | .id_table = id_table, |
1da177e4 | 165 | .num_ports = 1, |
aea006b9 | 166 | .bulk_in_size = 256, |
d4e598f6 | 167 | .bulk_out_size = 256, |
4cc27bd6 CS |
168 | .open = cp210x_open, |
169 | .close = cp210x_close, | |
170 | .break_ctl = cp210x_break_ctl, | |
171 | .set_termios = cp210x_set_termios, | |
172 | .tiocmget = cp210x_tiocmget, | |
173 | .tiocmset = cp210x_tiocmset, | |
174 | .attach = cp210x_startup, | |
d14fc1a7 | 175 | .dtr_rts = cp210x_dtr_rts |
1da177e4 LT |
176 | }; |
177 | ||
39a66b8d | 178 | /* Config request types */ |
1da177e4 LT |
179 | #define REQTYPE_HOST_TO_DEVICE 0x41 |
180 | #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
181 | ||
93ef1f1f CS |
182 | /* Config request codes */ |
183 | #define CP210X_IFC_ENABLE 0x00 | |
184 | #define CP210X_SET_BAUDDIV 0x01 | |
185 | #define CP210X_GET_BAUDDIV 0x02 | |
186 | #define CP210X_SET_LINE_CTL 0x03 | |
187 | #define CP210X_GET_LINE_CTL 0x04 | |
188 | #define CP210X_SET_BREAK 0x05 | |
189 | #define CP210X_IMM_CHAR 0x06 | |
190 | #define CP210X_SET_MHS 0x07 | |
191 | #define CP210X_GET_MDMSTS 0x08 | |
192 | #define CP210X_SET_XON 0x09 | |
193 | #define CP210X_SET_XOFF 0x0A | |
194 | #define CP210X_SET_EVENTMASK 0x0B | |
195 | #define CP210X_GET_EVENTMASK 0x0C | |
196 | #define CP210X_SET_CHAR 0x0D | |
197 | #define CP210X_GET_CHARS 0x0E | |
198 | #define CP210X_GET_PROPS 0x0F | |
199 | #define CP210X_GET_COMM_STATUS 0x10 | |
200 | #define CP210X_RESET 0x11 | |
201 | #define CP210X_PURGE 0x12 | |
202 | #define CP210X_SET_FLOW 0x13 | |
203 | #define CP210X_GET_FLOW 0x14 | |
204 | #define CP210X_EMBED_EVENTS 0x15 | |
205 | #define CP210X_GET_EVENTSTATE 0x16 | |
206 | #define CP210X_SET_CHARS 0x19 | |
7f482fc8 PF |
207 | #define CP210X_GET_BAUDRATE 0x1D |
208 | #define CP210X_SET_BAUDRATE 0x1E | |
93ef1f1f CS |
209 | |
210 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
211 | #define UART_ENABLE 0x0001 |
212 | #define UART_DISABLE 0x0000 | |
213 | ||
93ef1f1f | 214 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
215 | #define BAUD_RATE_GEN_FREQ 0x384000 |
216 | ||
93ef1f1f | 217 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 218 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 219 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
220 | #define BITS_DATA_6 0X0600 |
221 | #define BITS_DATA_7 0X0700 | |
222 | #define BITS_DATA_8 0X0800 | |
223 | #define BITS_DATA_9 0X0900 | |
224 | ||
225 | #define BITS_PARITY_MASK 0x00f0 | |
226 | #define BITS_PARITY_NONE 0x0000 | |
227 | #define BITS_PARITY_ODD 0x0010 | |
228 | #define BITS_PARITY_EVEN 0x0020 | |
229 | #define BITS_PARITY_MARK 0x0030 | |
230 | #define BITS_PARITY_SPACE 0x0040 | |
231 | ||
232 | #define BITS_STOP_MASK 0x000f | |
233 | #define BITS_STOP_1 0x0000 | |
234 | #define BITS_STOP_1_5 0x0001 | |
235 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 236 | |
93ef1f1f | 237 | /* CP210X_SET_BREAK */ |
72916791 CS |
238 | #define BREAK_ON 0x0001 |
239 | #define BREAK_OFF 0x0000 | |
1da177e4 | 240 | |
93ef1f1f | 241 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
242 | #define CONTROL_DTR 0x0001 |
243 | #define CONTROL_RTS 0x0002 | |
244 | #define CONTROL_CTS 0x0010 | |
245 | #define CONTROL_DSR 0x0020 | |
246 | #define CONTROL_RING 0x0040 | |
247 | #define CONTROL_DCD 0x0080 | |
248 | #define CONTROL_WRITE_DTR 0x0100 | |
249 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 250 | |
39a66b8d | 251 | /* |
4cc27bd6 CS |
252 | * cp210x_get_config |
253 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
254 | * 'size' is specified in bytes. |
255 | * 'data' is a pointer to a pre-allocated array of integers large | |
256 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
257 | */ | |
4cc27bd6 | 258 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 259 | unsigned int *data, int size) |
1da177e4 LT |
260 | { |
261 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 262 | __le32 *buf; |
39a66b8d CS |
263 | int result, i, length; |
264 | ||
265 | /* Number of integers required to contain the array */ | |
266 | length = (((size - 1) | 3) + 1)/4; | |
267 | ||
53ebb3b8 | 268 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 269 | if (!buf) { |
441b62c1 | 270 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
271 | return -ENOMEM; |
272 | } | |
1da177e4 | 273 | |
39a66b8d | 274 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 275 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
1da177e4 | 276 | request, REQTYPE_DEVICE_TO_HOST, 0x0000, |
39a66b8d | 277 | 0, buf, size, 300); |
1da177e4 | 278 | |
39a66b8d | 279 | /* Convert data into an array of integers */ |
ff7eb602 | 280 | for (i = 0; i < length; i++) |
39a66b8d | 281 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 282 | |
39a66b8d | 283 | kfree(buf); |
1da177e4 | 284 | |
39a66b8d | 285 | if (result != size) { |
97324955 | 286 | dbg("%s - Unable to send config request, " |
39a66b8d | 287 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 288 | __func__, request, size, result); |
2479e2a9 JH |
289 | if (result > 0) |
290 | result = -EPROTO; | |
291 | ||
292 | return result; | |
39a66b8d | 293 | } |
1da177e4 | 294 | |
39a66b8d | 295 | return 0; |
1da177e4 LT |
296 | } |
297 | ||
39a66b8d | 298 | /* |
4cc27bd6 CS |
299 | * cp210x_set_config |
300 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
301 | * Values less than 16 bits wide are sent directly |
302 | * 'size' is specified in bytes. | |
303 | */ | |
4cc27bd6 | 304 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 305 | unsigned int *data, int size) |
1da177e4 LT |
306 | { |
307 | struct usb_serial *serial = port->serial; | |
53ebb3b8 | 308 | __le32 *buf; |
39a66b8d | 309 | int result, i, length; |
1da177e4 | 310 | |
39a66b8d CS |
311 | /* Number of integers required to contain the array */ |
312 | length = (((size - 1) | 3) + 1)/4; | |
313 | ||
53ebb3b8 | 314 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
315 | if (!buf) { |
316 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 317 | __func__); |
39a66b8d CS |
318 | return -ENOMEM; |
319 | } | |
320 | ||
321 | /* Array of integers into bytes */ | |
322 | for (i = 0; i < length; i++) | |
323 | buf[i] = cpu_to_le32(data[i]); | |
324 | ||
325 | if (size > 2) { | |
ff7eb602 | 326 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
327 | usb_sndctrlpipe(serial->dev, 0), |
328 | request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
329 | 0, buf, size, 300); | |
330 | } else { | |
ff7eb602 | 331 | result = usb_control_msg(serial->dev, |
39a66b8d CS |
332 | usb_sndctrlpipe(serial->dev, 0), |
333 | request, REQTYPE_HOST_TO_DEVICE, data[0], | |
334 | 0, NULL, 0, 300); | |
1da177e4 LT |
335 | } |
336 | ||
39a66b8d CS |
337 | kfree(buf); |
338 | ||
339 | if ((size > 2 && result != size) || result < 0) { | |
97324955 | 340 | dbg("%s - Unable to send request, " |
39a66b8d | 341 | "request=0x%x size=%d result=%d\n", |
441b62c1 | 342 | __func__, request, size, result); |
2479e2a9 JH |
343 | if (result > 0) |
344 | result = -EPROTO; | |
345 | ||
346 | return result; | |
39a66b8d | 347 | } |
1da177e4 LT |
348 | |
349 | return 0; | |
350 | } | |
351 | ||
39a66b8d | 352 | /* |
4cc27bd6 CS |
353 | * cp210x_set_config_single |
354 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
355 | * without requiring an integer pointer |
356 | */ | |
4cc27bd6 | 357 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
358 | u8 request, unsigned int data) |
359 | { | |
4cc27bd6 | 360 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
361 | } |
362 | ||
ef8b6bcb | 363 | /* |
4cc27bd6 | 364 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
365 | * Quantises the baud rate as per AN205 Table 1 |
366 | */ | |
4cc27bd6 | 367 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) { |
be125d9c JH |
368 | if (baud <= 300) |
369 | baud = 300; | |
ef8b6bcb CS |
370 | else if (baud <= 600) baud = 600; |
371 | else if (baud <= 1200) baud = 1200; | |
372 | else if (baud <= 1800) baud = 1800; | |
373 | else if (baud <= 2400) baud = 2400; | |
374 | else if (baud <= 4000) baud = 4000; | |
375 | else if (baud <= 4803) baud = 4800; | |
376 | else if (baud <= 7207) baud = 7200; | |
377 | else if (baud <= 9612) baud = 9600; | |
378 | else if (baud <= 14428) baud = 14400; | |
379 | else if (baud <= 16062) baud = 16000; | |
380 | else if (baud <= 19250) baud = 19200; | |
381 | else if (baud <= 28912) baud = 28800; | |
382 | else if (baud <= 38601) baud = 38400; | |
383 | else if (baud <= 51558) baud = 51200; | |
384 | else if (baud <= 56280) baud = 56000; | |
385 | else if (baud <= 58053) baud = 57600; | |
386 | else if (baud <= 64111) baud = 64000; | |
387 | else if (baud <= 77608) baud = 76800; | |
388 | else if (baud <= 117028) baud = 115200; | |
389 | else if (baud <= 129347) baud = 128000; | |
390 | else if (baud <= 156868) baud = 153600; | |
391 | else if (baud <= 237832) baud = 230400; | |
392 | else if (baud <= 254234) baud = 250000; | |
393 | else if (baud <= 273066) baud = 256000; | |
394 | else if (baud <= 491520) baud = 460800; | |
395 | else if (baud <= 567138) baud = 500000; | |
396 | else if (baud <= 670254) baud = 576000; | |
397 | else if (baud <= 1053257) baud = 921600; | |
398 | else if (baud <= 1474560) baud = 1228800; | |
399 | else if (baud <= 2457600) baud = 1843200; | |
400 | else baud = 3686400; | |
401 | return baud; | |
402 | } | |
403 | ||
a509a7e4 | 404 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 405 | { |
1da177e4 LT |
406 | int result; |
407 | ||
441b62c1 | 408 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 409 | |
2479e2a9 JH |
410 | result = cp210x_set_config_single(port, CP210X_IFC_ENABLE, |
411 | UART_ENABLE); | |
412 | if (result) { | |
413 | dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); | |
414 | return result; | |
1da177e4 LT |
415 | } |
416 | ||
39a66b8d | 417 | /* Configure the termios structure */ |
4cc27bd6 | 418 | cp210x_get_termios(tty, port); |
55b2afbb | 419 | |
cdc32fd6 JH |
420 | /* The baud rate must be initialised on cp2104 */ |
421 | if (tty) | |
422 | cp210x_change_speed(tty, port, NULL); | |
423 | ||
55b2afbb | 424 | return usb_serial_generic_open(tty, port); |
1da177e4 LT |
425 | } |
426 | ||
4cc27bd6 | 427 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 428 | { |
441b62c1 | 429 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 430 | |
f26788da | 431 | usb_serial_generic_close(port); |
1da177e4 | 432 | |
95bef012 ON |
433 | mutex_lock(&port->serial->disc_mutex); |
434 | if (!port->serial->disconnected) | |
4cc27bd6 | 435 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
95bef012 | 436 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
437 | } |
438 | ||
39a66b8d | 439 | /* |
4cc27bd6 | 440 | * cp210x_get_termios |
39a66b8d CS |
441 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
442 | * from the device, corrects any unsupported values, and configures the | |
443 | * termios structure to reflect the state of the device | |
444 | */ | |
4cc27bd6 | 445 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
446 | struct usb_serial_port *port) |
447 | { | |
448 | unsigned int baud; | |
449 | ||
450 | if (tty) { | |
4cc27bd6 | 451 | cp210x_get_termios_port(tty->driver_data, |
d2ad67b3 V |
452 | &tty->termios->c_cflag, &baud); |
453 | tty_encode_baud_rate(tty, baud, baud); | |
454 | } | |
455 | ||
456 | else { | |
457 | unsigned int cflag; | |
458 | cflag = 0; | |
4cc27bd6 | 459 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
460 | } |
461 | } | |
462 | ||
463 | /* | |
4cc27bd6 CS |
464 | * cp210x_get_termios_port |
465 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 466 | */ |
4cc27bd6 | 467 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 468 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 469 | { |
39a66b8d | 470 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
471 | unsigned int baud; |
472 | unsigned int bits; | |
1da177e4 | 473 | |
441b62c1 | 474 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 475 | |
7f482fc8 | 476 | cp210x_get_config(port, CP210X_GET_BAUDRATE, &baud, 4); |
1da177e4 | 477 | |
441b62c1 | 478 | dbg("%s - baud rate = %d", __func__, baud); |
d2ad67b3 | 479 | *baudp = baud; |
9ab0f202 | 480 | |
d2ad67b3 | 481 | cflag = *cflagp; |
1da177e4 | 482 | |
4cc27bd6 | 483 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 | 484 | cflag &= ~CSIZE; |
ff7eb602 AC |
485 | switch (bits & BITS_DATA_MASK) { |
486 | case BITS_DATA_5: | |
487 | dbg("%s - data bits = 5", __func__); | |
488 | cflag |= CS5; | |
489 | break; | |
490 | case BITS_DATA_6: | |
491 | dbg("%s - data bits = 6", __func__); | |
492 | cflag |= CS6; | |
493 | break; | |
494 | case BITS_DATA_7: | |
495 | dbg("%s - data bits = 7", __func__); | |
496 | cflag |= CS7; | |
497 | break; | |
498 | case BITS_DATA_8: | |
499 | dbg("%s - data bits = 8", __func__); | |
500 | cflag |= CS8; | |
501 | break; | |
502 | case BITS_DATA_9: | |
503 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
504 | __func__); | |
505 | cflag |= CS8; | |
506 | bits &= ~BITS_DATA_MASK; | |
507 | bits |= BITS_DATA_8; | |
4cc27bd6 | 508 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
509 | break; |
510 | default: | |
511 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
512 | cflag |= CS8; | |
513 | bits &= ~BITS_DATA_MASK; | |
514 | bits |= BITS_DATA_8; | |
4cc27bd6 | 515 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 516 | break; |
1da177e4 LT |
517 | } |
518 | ||
ff7eb602 AC |
519 | switch (bits & BITS_PARITY_MASK) { |
520 | case BITS_PARITY_NONE: | |
521 | dbg("%s - parity = NONE", __func__); | |
522 | cflag &= ~PARENB; | |
523 | break; | |
524 | case BITS_PARITY_ODD: | |
525 | dbg("%s - parity = ODD", __func__); | |
526 | cflag |= (PARENB|PARODD); | |
527 | break; | |
528 | case BITS_PARITY_EVEN: | |
529 | dbg("%s - parity = EVEN", __func__); | |
530 | cflag &= ~PARODD; | |
531 | cflag |= PARENB; | |
532 | break; | |
533 | case BITS_PARITY_MARK: | |
4b6181ca RK |
534 | dbg("%s - parity = MARK", __func__); |
535 | cflag |= (PARENB|PARODD|CMSPAR); | |
ff7eb602 AC |
536 | break; |
537 | case BITS_PARITY_SPACE: | |
4b6181ca RK |
538 | dbg("%s - parity = SPACE", __func__); |
539 | cflag &= ~PARODD; | |
540 | cflag |= (PARENB|CMSPAR); | |
ff7eb602 AC |
541 | break; |
542 | default: | |
543 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
544 | cflag &= ~PARENB; | |
545 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 546 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 547 | break; |
1da177e4 LT |
548 | } |
549 | ||
550 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
551 | switch (bits & BITS_STOP_MASK) { |
552 | case BITS_STOP_1: | |
553 | dbg("%s - stop bits = 1", __func__); | |
554 | break; | |
555 | case BITS_STOP_1_5: | |
556 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
557 | __func__); | |
558 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 559 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
560 | break; |
561 | case BITS_STOP_2: | |
562 | dbg("%s - stop bits = 2", __func__); | |
563 | cflag |= CSTOPB; | |
564 | break; | |
565 | default: | |
566 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
567 | __func__); | |
568 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 569 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 570 | break; |
1da177e4 LT |
571 | } |
572 | ||
4cc27bd6 | 573 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 574 | if (modem_ctl[0] & 0x0008) { |
441b62c1 | 575 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
576 | cflag |= CRTSCTS; |
577 | } else { | |
441b62c1 | 578 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
579 | cflag &= ~CRTSCTS; |
580 | } | |
581 | ||
d2ad67b3 | 582 | *cflagp = cflag; |
1da177e4 LT |
583 | } |
584 | ||
e5990874 JH |
585 | /* |
586 | * CP2101 supports the following baud rates: | |
587 | * | |
588 | * 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800, | |
589 | * 38400, 56000, 57600, 115200, 128000, 230400, 460800, 921600 | |
590 | * | |
591 | * CP2102 and CP2103 support the following additional rates: | |
592 | * | |
593 | * 4000, 16000, 51200, 64000, 76800, 153600, 250000, 256000, 500000, | |
594 | * 576000 | |
595 | * | |
596 | * The device will map a requested rate to a supported one, but the result | |
597 | * of requests for rates greater than 1053257 is undefined (see AN205). | |
598 | * | |
599 | * CP2104, CP2105 and CP2110 support most rates up to 2M, 921k and 1M baud, | |
600 | * respectively, with an error less than 1%. The actual rates are determined | |
601 | * by | |
602 | * | |
603 | * div = round(freq / (2 x prescale x request)) | |
604 | * actual = freq / (2 x prescale x div) | |
605 | * | |
606 | * For CP2104 and CP2105 freq is 48Mhz and prescale is 4 for request <= 365bps | |
607 | * or 1 otherwise. | |
608 | * For CP2110 freq is 24Mhz and prescale is 4 for request <= 300bps or 1 | |
609 | * otherwise. | |
610 | */ | |
611 | static void cp210x_change_speed(struct tty_struct *tty, | |
612 | struct usb_serial_port *port, struct ktermios *old_termios) | |
613 | { | |
614 | u32 baud; | |
615 | ||
616 | baud = tty->termios->c_ospeed; | |
617 | ||
618 | /* This maps the requested rate to a rate valid on cp2102 or cp2103. | |
619 | * | |
620 | * NOTE: B0 is not implemented. | |
621 | */ | |
622 | baud = cp210x_quantise_baudrate(baud); | |
623 | ||
624 | dbg("%s - setting baud rate to %u", __func__, baud); | |
625 | if (cp210x_set_config(port, CP210X_SET_BAUDRATE, &baud, | |
626 | sizeof(baud))) { | |
627 | dev_warn(&port->dev, "failed to set baud rate to %u\n", baud); | |
628 | if (old_termios) | |
629 | baud = old_termios->c_ospeed; | |
630 | else | |
631 | baud = 9600; | |
632 | } | |
633 | ||
634 | tty_encode_baud_rate(tty, baud, baud); | |
635 | } | |
636 | ||
4cc27bd6 | 637 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 638 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 639 | { |
9ab0f202 | 640 | unsigned int cflag, old_cflag; |
34b76fca | 641 | unsigned int bits; |
39a66b8d | 642 | unsigned int modem_ctl[4]; |
1da177e4 | 643 | |
441b62c1 | 644 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 645 | |
95da310e | 646 | if (!tty) |
1da177e4 | 647 | return; |
9ab0f202 | 648 | |
95da310e | 649 | cflag = tty->termios->c_cflag; |
01e96d28 | 650 | old_cflag = old_termios->c_cflag; |
e5990874 JH |
651 | |
652 | if (tty->termios->c_ospeed != old_termios->c_ospeed) | |
653 | cp210x_change_speed(tty, port, old_termios); | |
1da177e4 | 654 | |
39a66b8d | 655 | /* If the number of data bits is to be updated */ |
1da177e4 | 656 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 657 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
658 | bits &= ~BITS_DATA_MASK; |
659 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
660 | case CS5: |
661 | bits |= BITS_DATA_5; | |
662 | dbg("%s - data bits = 5", __func__); | |
663 | break; | |
664 | case CS6: | |
665 | bits |= BITS_DATA_6; | |
666 | dbg("%s - data bits = 6", __func__); | |
667 | break; | |
668 | case CS7: | |
669 | bits |= BITS_DATA_7; | |
670 | dbg("%s - data bits = 7", __func__); | |
671 | break; | |
672 | case CS8: | |
673 | bits |= BITS_DATA_8; | |
674 | dbg("%s - data bits = 8", __func__); | |
675 | break; | |
676 | /*case CS9: | |
677 | bits |= BITS_DATA_9; | |
678 | dbg("%s - data bits = 9", __func__); | |
679 | break;*/ | |
680 | default: | |
4cc27bd6 | 681 | dbg("cp210x driver does not " |
1da177e4 LT |
682 | "support the number of bits requested," |
683 | " using 8 bit mode\n"); | |
684 | bits |= BITS_DATA_8; | |
685 | break; | |
686 | } | |
4cc27bd6 | 687 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 688 | dbg("Number of data bits requested " |
1da177e4 LT |
689 | "not supported by device\n"); |
690 | } | |
691 | ||
4b6181ca RK |
692 | if ((cflag & (PARENB|PARODD|CMSPAR)) != |
693 | (old_cflag & (PARENB|PARODD|CMSPAR))) { | |
4cc27bd6 | 694 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
695 | bits &= ~BITS_PARITY_MASK; |
696 | if (cflag & PARENB) { | |
4b6181ca RK |
697 | if (cflag & CMSPAR) { |
698 | if (cflag & PARODD) { | |
699 | bits |= BITS_PARITY_MARK; | |
700 | dbg("%s - parity = MARK", __func__); | |
701 | } else { | |
702 | bits |= BITS_PARITY_SPACE; | |
703 | dbg("%s - parity = SPACE", __func__); | |
704 | } | |
1da177e4 | 705 | } else { |
4b6181ca RK |
706 | if (cflag & PARODD) { |
707 | bits |= BITS_PARITY_ODD; | |
708 | dbg("%s - parity = ODD", __func__); | |
709 | } else { | |
710 | bits |= BITS_PARITY_EVEN; | |
711 | dbg("%s - parity = EVEN", __func__); | |
712 | } | |
1da177e4 LT |
713 | } |
714 | } | |
4cc27bd6 | 715 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 716 | dbg("Parity mode not supported " |
1da177e4 LT |
717 | "by device\n"); |
718 | } | |
719 | ||
720 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 721 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
722 | bits &= ~BITS_STOP_MASK; |
723 | if (cflag & CSTOPB) { | |
724 | bits |= BITS_STOP_2; | |
441b62c1 | 725 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
726 | } else { |
727 | bits |= BITS_STOP_1; | |
441b62c1 | 728 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 729 | } |
4cc27bd6 | 730 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 731 | dbg("Number of stop bits requested " |
1da177e4 LT |
732 | "not supported by device\n"); |
733 | } | |
39a66b8d CS |
734 | |
735 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 736 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 737 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", |
441b62c1 | 738 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
739 | modem_ctl[2], modem_ctl[3]); |
740 | ||
741 | if (cflag & CRTSCTS) { | |
742 | modem_ctl[0] &= ~0x7B; | |
743 | modem_ctl[0] |= 0x09; | |
744 | modem_ctl[1] = 0x80; | |
441b62c1 | 745 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
746 | } else { |
747 | modem_ctl[0] &= ~0x7B; | |
748 | modem_ctl[0] |= 0x01; | |
749 | modem_ctl[1] |= 0x40; | |
441b62c1 | 750 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
751 | } |
752 | ||
753 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 754 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d | 755 | modem_ctl[2], modem_ctl[3]); |
4cc27bd6 | 756 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
757 | } |
758 | ||
759 | } | |
760 | ||
20b9d177 | 761 | static int cp210x_tiocmset (struct tty_struct *tty, |
39a66b8d CS |
762 | unsigned int set, unsigned int clear) |
763 | { | |
95da310e | 764 | struct usb_serial_port *port = tty->driver_data; |
20b9d177 | 765 | return cp210x_tiocmset_port(port, set, clear); |
d2ad67b3 V |
766 | } |
767 | ||
20b9d177 | 768 | static int cp210x_tiocmset_port(struct usb_serial_port *port, |
d2ad67b3 V |
769 | unsigned int set, unsigned int clear) |
770 | { | |
b2bdd1f5 | 771 | unsigned int control = 0; |
39a66b8d | 772 | |
441b62c1 | 773 | dbg("%s - port %d", __func__, port->number); |
39a66b8d CS |
774 | |
775 | if (set & TIOCM_RTS) { | |
776 | control |= CONTROL_RTS; | |
777 | control |= CONTROL_WRITE_RTS; | |
778 | } | |
779 | if (set & TIOCM_DTR) { | |
780 | control |= CONTROL_DTR; | |
781 | control |= CONTROL_WRITE_DTR; | |
782 | } | |
783 | if (clear & TIOCM_RTS) { | |
784 | control &= ~CONTROL_RTS; | |
785 | control |= CONTROL_WRITE_RTS; | |
786 | } | |
787 | if (clear & TIOCM_DTR) { | |
788 | control &= ~CONTROL_DTR; | |
789 | control |= CONTROL_WRITE_DTR; | |
790 | } | |
791 | ||
441b62c1 | 792 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d | 793 | |
4cc27bd6 | 794 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
795 | } |
796 | ||
d94c7bd4 AC |
797 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
798 | { | |
799 | if (on) | |
20b9d177 | 800 | cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0); |
d94c7bd4 | 801 | else |
20b9d177 | 802 | cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS); |
d94c7bd4 AC |
803 | } |
804 | ||
60b33c13 | 805 | static int cp210x_tiocmget (struct tty_struct *tty) |
39a66b8d | 806 | { |
95da310e | 807 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
808 | unsigned int control; |
809 | int result; | |
39a66b8d | 810 | |
441b62c1 | 811 | dbg("%s - port %d", __func__, port->number); |
39a66b8d | 812 | |
4cc27bd6 | 813 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
814 | |
815 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
816 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
817 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
818 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
819 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
820 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
821 | ||
441b62c1 | 822 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
823 | |
824 | return result; | |
1da177e4 LT |
825 | } |
826 | ||
4cc27bd6 | 827 | static void cp210x_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 828 | { |
95da310e | 829 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 830 | unsigned int state; |
1da177e4 | 831 | |
441b62c1 | 832 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
833 | if (break_state == 0) |
834 | state = BREAK_OFF; | |
835 | else | |
836 | state = BREAK_ON; | |
441b62c1 | 837 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 838 | state == BREAK_OFF ? "off" : "on"); |
4cc27bd6 | 839 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
840 | } |
841 | ||
4cc27bd6 | 842 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 843 | { |
4cc27bd6 | 844 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 LT |
845 | usb_reset_device(serial->dev); |
846 | return 0; | |
847 | } | |
848 | ||
4cc27bd6 | 849 | static int __init cp210x_init(void) |
1da177e4 LT |
850 | { |
851 | int retval; | |
852 | ||
4cc27bd6 | 853 | retval = usb_serial_register(&cp210x_device); |
1da177e4 | 854 | if (retval) |
39a66b8d | 855 | return retval; /* Failed to register */ |
1da177e4 | 856 | |
4cc27bd6 | 857 | retval = usb_register(&cp210x_driver); |
1da177e4 | 858 | if (retval) { |
39a66b8d | 859 | /* Failed to register */ |
4cc27bd6 | 860 | usb_serial_deregister(&cp210x_device); |
1da177e4 LT |
861 | return retval; |
862 | } | |
863 | ||
39a66b8d | 864 | /* Success */ |
c197a8db GKH |
865 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
866 | DRIVER_DESC "\n"); | |
1da177e4 LT |
867 | return 0; |
868 | } | |
869 | ||
4cc27bd6 | 870 | static void __exit cp210x_exit(void) |
1da177e4 | 871 | { |
4cc27bd6 CS |
872 | usb_deregister(&cp210x_driver); |
873 | usb_serial_deregister(&cp210x_device); | |
1da177e4 LT |
874 | } |
875 | ||
4cc27bd6 CS |
876 | module_init(cp210x_init); |
877 | module_exit(cp210x_exit); | |
1da177e4 LT |
878 | |
879 | MODULE_DESCRIPTION(DRIVER_DESC); | |
880 | MODULE_VERSION(DRIVER_VERSION); | |
881 | MODULE_LICENSE("GPL"); | |
882 | ||
883 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
884 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |