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); |
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 *); | |
a5360a53 | 52 | static void cp210x_release(struct usb_serial *); |
d94c7bd4 | 53 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on); |
1da177e4 | 54 | |
90ab5ee9 | 55 | static bool debug; |
1da177e4 | 56 | |
7d40d7e8 | 57 | static const struct usb_device_id id_table[] = { |
2f1136d1 | 58 | { USB_DEVICE(0x045B, 0x0053) }, /* Renesas RX610 RX-Stick */ |
5091b587 | 59 | { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ |
59fba744 | 60 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
5b22a32e | 61 | { USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
b7c7cbc8 | 62 | { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ |
1f4f714f | 63 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
b7c7cbc8 | 64 | { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ |
eefd9029 CS |
65 | { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */ |
66 | { USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */ | |
198b9517 | 67 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 68 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 69 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
198b9517 | 70 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
71 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
72 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
b7c7cbc8 | 73 | { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */ |
0601e116 AK |
74 | { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */ |
75 | { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ | |
5de8b3ac | 76 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 77 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
eefd9029 CS |
78 | { USB_DEVICE(0x10C4, 0x8044) }, /* Cygnal Debug Adapter */ |
79 | { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */ | |
92f5cae2 | 80 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 81 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 82 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
eefd9029 | 83 | { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */ |
e988fc8a | 84 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
5bbfa6f4 | 85 | { USB_DEVICE(0x10C4, 0x80C4) }, /* Cygnal Integrated Products, Inc., Optris infrared thermometer */ |
e988fc8a | 86 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ |
92f5cae2 | 87 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 88 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 89 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 90 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
8bf16ba7 | 91 | { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */ |
fc4bd64c JH |
92 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
93 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
0bf7a81c | 94 | { USB_DEVICE(0x10C4, 0x8156) }, /* B&G H3000 link cable */ |
e988fc8a | 95 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
eefd9029 | 96 | { USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */ |
c6535668 | 97 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 98 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
08e87d0d | 99 | { USB_DEVICE(0x10C4, 0x81A9) }, /* Multiplex RC Interface */ |
59fba744 | 100 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
eefd9029 | 101 | { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */ |
78001e3d BS |
102 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
103 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 104 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
bd07c551 | 105 | { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */ |
b7c7cbc8 | 106 | { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ |
78001e3d | 107 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 108 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
25985edc | 109 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demonstration module */ |
c851e83f | 110 | { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */ |
b7c7cbc8 | 111 | { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ |
ba0f332c | 112 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
8bf16ba7 | 113 | { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */ |
881e3c98 | 114 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
faea63f7 | 115 | { USB_DEVICE(0x10C4, 0x83D8) }, /* DekTec DTA Plus VHF/UHF Booster/Attenuator */ |
8bf16ba7 | 116 | { USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */ |
faea63f7 | 117 | { USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */ |
d23bac9f | 118 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
541e05ec | 119 | { USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */ |
4eff0b40 CS |
120 | { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */ |
121 | { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */ | |
122 | { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */ | |
123 | { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */ | |
e988fc8a | 124 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 125 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
a5360a53 PF |
126 | { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */ |
127 | { USB_DEVICE(0x10C4, 0xEA80) }, /* Silicon Labs factory default */ | |
eefd9029 | 128 | { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */ |
5de8b3ac CS |
129 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
130 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
131 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
132 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 133 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 134 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 135 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 136 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
5de8b3ac | 137 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
b0ce84d5 | 138 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
356c5a48 AIB |
139 | { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */ |
140 | { USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */ | |
141 | { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */ | |
142 | { USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */ | |
c6c1e449 BT |
143 | { USB_DEVICE(0x17A8, 0x0001) }, /* Kamstrup Optical Eye/3-wire */ |
144 | { USB_DEVICE(0x17A8, 0x0005) }, /* Kamstrup M-Bus Master MultiPort 250D */ | |
541e05ec CS |
145 | { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ |
146 | { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ | |
147 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ | |
93ad03d6 | 148 | { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */ |
791b7d7c | 149 | { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */ |
541e05ec | 150 | { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ |
39a66b8d | 151 | { } /* Terminating Entry */ |
1da177e4 LT |
152 | }; |
153 | ||
ff7eb602 | 154 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 155 | |
a5360a53 PF |
156 | struct cp210x_port_private { |
157 | __u8 bInterfaceNumber; | |
158 | }; | |
159 | ||
4cc27bd6 | 160 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
161 | .driver = { |
162 | .owner = THIS_MODULE, | |
4cc27bd6 | 163 | .name = "cp210x", |
18fcac35 | 164 | }, |
1da177e4 | 165 | .id_table = id_table, |
1da177e4 | 166 | .num_ports = 1, |
aea006b9 | 167 | .bulk_in_size = 256, |
d4e598f6 | 168 | .bulk_out_size = 256, |
4cc27bd6 CS |
169 | .open = cp210x_open, |
170 | .close = cp210x_close, | |
171 | .break_ctl = cp210x_break_ctl, | |
172 | .set_termios = cp210x_set_termios, | |
173 | .tiocmget = cp210x_tiocmget, | |
174 | .tiocmset = cp210x_tiocmset, | |
175 | .attach = cp210x_startup, | |
a5360a53 | 176 | .release = cp210x_release, |
d14fc1a7 | 177 | .dtr_rts = cp210x_dtr_rts |
1da177e4 LT |
178 | }; |
179 | ||
08a4f6bc AS |
180 | static struct usb_serial_driver * const serial_drivers[] = { |
181 | &cp210x_device, NULL | |
182 | }; | |
183 | ||
39a66b8d | 184 | /* Config request types */ |
32445605 PF |
185 | #define REQTYPE_HOST_TO_INTERFACE 0x41 |
186 | #define REQTYPE_INTERFACE_TO_HOST 0xc1 | |
187 | #define REQTYPE_HOST_TO_DEVICE 0x40 | |
188 | #define REQTYPE_DEVICE_TO_HOST 0xc0 | |
1da177e4 | 189 | |
93ef1f1f CS |
190 | /* Config request codes */ |
191 | #define CP210X_IFC_ENABLE 0x00 | |
192 | #define CP210X_SET_BAUDDIV 0x01 | |
193 | #define CP210X_GET_BAUDDIV 0x02 | |
194 | #define CP210X_SET_LINE_CTL 0x03 | |
195 | #define CP210X_GET_LINE_CTL 0x04 | |
196 | #define CP210X_SET_BREAK 0x05 | |
197 | #define CP210X_IMM_CHAR 0x06 | |
198 | #define CP210X_SET_MHS 0x07 | |
199 | #define CP210X_GET_MDMSTS 0x08 | |
200 | #define CP210X_SET_XON 0x09 | |
201 | #define CP210X_SET_XOFF 0x0A | |
202 | #define CP210X_SET_EVENTMASK 0x0B | |
203 | #define CP210X_GET_EVENTMASK 0x0C | |
204 | #define CP210X_SET_CHAR 0x0D | |
205 | #define CP210X_GET_CHARS 0x0E | |
206 | #define CP210X_GET_PROPS 0x0F | |
207 | #define CP210X_GET_COMM_STATUS 0x10 | |
208 | #define CP210X_RESET 0x11 | |
209 | #define CP210X_PURGE 0x12 | |
210 | #define CP210X_SET_FLOW 0x13 | |
211 | #define CP210X_GET_FLOW 0x14 | |
212 | #define CP210X_EMBED_EVENTS 0x15 | |
213 | #define CP210X_GET_EVENTSTATE 0x16 | |
214 | #define CP210X_SET_CHARS 0x19 | |
7f482fc8 PF |
215 | #define CP210X_GET_BAUDRATE 0x1D |
216 | #define CP210X_SET_BAUDRATE 0x1E | |
93ef1f1f CS |
217 | |
218 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
219 | #define UART_ENABLE 0x0001 |
220 | #define UART_DISABLE 0x0000 | |
221 | ||
93ef1f1f | 222 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
223 | #define BAUD_RATE_GEN_FREQ 0x384000 |
224 | ||
93ef1f1f | 225 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 226 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 227 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
228 | #define BITS_DATA_6 0X0600 |
229 | #define BITS_DATA_7 0X0700 | |
230 | #define BITS_DATA_8 0X0800 | |
231 | #define BITS_DATA_9 0X0900 | |
232 | ||
233 | #define BITS_PARITY_MASK 0x00f0 | |
234 | #define BITS_PARITY_NONE 0x0000 | |
235 | #define BITS_PARITY_ODD 0x0010 | |
236 | #define BITS_PARITY_EVEN 0x0020 | |
237 | #define BITS_PARITY_MARK 0x0030 | |
238 | #define BITS_PARITY_SPACE 0x0040 | |
239 | ||
240 | #define BITS_STOP_MASK 0x000f | |
241 | #define BITS_STOP_1 0x0000 | |
242 | #define BITS_STOP_1_5 0x0001 | |
243 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 244 | |
93ef1f1f | 245 | /* CP210X_SET_BREAK */ |
72916791 CS |
246 | #define BREAK_ON 0x0001 |
247 | #define BREAK_OFF 0x0000 | |
1da177e4 | 248 | |
93ef1f1f | 249 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
250 | #define CONTROL_DTR 0x0001 |
251 | #define CONTROL_RTS 0x0002 | |
252 | #define CONTROL_CTS 0x0010 | |
253 | #define CONTROL_DSR 0x0020 | |
254 | #define CONTROL_RING 0x0040 | |
255 | #define CONTROL_DCD 0x0080 | |
256 | #define CONTROL_WRITE_DTR 0x0100 | |
257 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 258 | |
39a66b8d | 259 | /* |
4cc27bd6 CS |
260 | * cp210x_get_config |
261 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
262 | * 'size' is specified in bytes. |
263 | * 'data' is a pointer to a pre-allocated array of integers large | |
264 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
265 | */ | |
4cc27bd6 | 266 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 267 | unsigned int *data, int size) |
1da177e4 LT |
268 | { |
269 | struct usb_serial *serial = port->serial; | |
a5360a53 | 270 | struct cp210x_port_private *port_priv = usb_get_serial_port_data(port); |
53ebb3b8 | 271 | __le32 *buf; |
39a66b8d CS |
272 | int result, i, length; |
273 | ||
274 | /* Number of integers required to contain the array */ | |
275 | length = (((size - 1) | 3) + 1)/4; | |
276 | ||
53ebb3b8 | 277 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 278 | if (!buf) { |
441b62c1 | 279 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
280 | return -ENOMEM; |
281 | } | |
1da177e4 | 282 | |
39a66b8d | 283 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 284 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
32445605 | 285 | request, REQTYPE_INTERFACE_TO_HOST, 0x0000, |
2d5733fc YM |
286 | port_priv->bInterfaceNumber, buf, size, |
287 | USB_CTRL_GET_TIMEOUT); | |
1da177e4 | 288 | |
39a66b8d | 289 | /* Convert data into an array of integers */ |
ff7eb602 | 290 | for (i = 0; i < length; i++) |
39a66b8d | 291 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 292 | |
39a66b8d | 293 | kfree(buf); |
1da177e4 | 294 | |
39a66b8d | 295 | if (result != size) { |
97324955 | 296 | dbg("%s - Unable to send config request, " |
0b238583 | 297 | "request=0x%x size=%d result=%d", |
441b62c1 | 298 | __func__, request, size, result); |
2479e2a9 JH |
299 | if (result > 0) |
300 | result = -EPROTO; | |
301 | ||
302 | return result; | |
39a66b8d | 303 | } |
1da177e4 | 304 | |
39a66b8d | 305 | return 0; |
1da177e4 LT |
306 | } |
307 | ||
39a66b8d | 308 | /* |
4cc27bd6 CS |
309 | * cp210x_set_config |
310 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
311 | * Values less than 16 bits wide are sent directly |
312 | * 'size' is specified in bytes. | |
313 | */ | |
4cc27bd6 | 314 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 315 | unsigned int *data, int size) |
1da177e4 LT |
316 | { |
317 | struct usb_serial *serial = port->serial; | |
a5360a53 | 318 | struct cp210x_port_private *port_priv = usb_get_serial_port_data(port); |
53ebb3b8 | 319 | __le32 *buf; |
39a66b8d | 320 | int result, i, length; |
1da177e4 | 321 | |
39a66b8d CS |
322 | /* Number of integers required to contain the array */ |
323 | length = (((size - 1) | 3) + 1)/4; | |
324 | ||
53ebb3b8 | 325 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
326 | if (!buf) { |
327 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 328 | __func__); |
39a66b8d CS |
329 | return -ENOMEM; |
330 | } | |
331 | ||
332 | /* Array of integers into bytes */ | |
333 | for (i = 0; i < length; i++) | |
334 | buf[i] = cpu_to_le32(data[i]); | |
335 | ||
336 | if (size > 2) { | |
ff7eb602 | 337 | result = usb_control_msg(serial->dev, |
39a66b8d | 338 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 339 | request, REQTYPE_HOST_TO_INTERFACE, 0x0000, |
2d5733fc YM |
340 | port_priv->bInterfaceNumber, buf, size, |
341 | USB_CTRL_SET_TIMEOUT); | |
39a66b8d | 342 | } else { |
ff7eb602 | 343 | result = usb_control_msg(serial->dev, |
39a66b8d | 344 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 345 | request, REQTYPE_HOST_TO_INTERFACE, data[0], |
2d5733fc YM |
346 | port_priv->bInterfaceNumber, NULL, 0, |
347 | USB_CTRL_SET_TIMEOUT); | |
1da177e4 LT |
348 | } |
349 | ||
39a66b8d CS |
350 | kfree(buf); |
351 | ||
352 | if ((size > 2 && result != size) || result < 0) { | |
97324955 | 353 | dbg("%s - Unable to send request, " |
0b238583 | 354 | "request=0x%x size=%d result=%d", |
441b62c1 | 355 | __func__, request, size, result); |
2479e2a9 JH |
356 | if (result > 0) |
357 | result = -EPROTO; | |
358 | ||
359 | return result; | |
39a66b8d | 360 | } |
1da177e4 LT |
361 | |
362 | return 0; | |
363 | } | |
364 | ||
39a66b8d | 365 | /* |
4cc27bd6 CS |
366 | * cp210x_set_config_single |
367 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
368 | * without requiring an integer pointer |
369 | */ | |
4cc27bd6 | 370 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
371 | u8 request, unsigned int data) |
372 | { | |
4cc27bd6 | 373 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
374 | } |
375 | ||
ef8b6bcb | 376 | /* |
4cc27bd6 | 377 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
378 | * Quantises the baud rate as per AN205 Table 1 |
379 | */ | |
4cc27bd6 | 380 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) { |
be125d9c JH |
381 | if (baud <= 300) |
382 | baud = 300; | |
ef8b6bcb CS |
383 | else if (baud <= 600) baud = 600; |
384 | else if (baud <= 1200) baud = 1200; | |
385 | else if (baud <= 1800) baud = 1800; | |
386 | else if (baud <= 2400) baud = 2400; | |
387 | else if (baud <= 4000) baud = 4000; | |
388 | else if (baud <= 4803) baud = 4800; | |
389 | else if (baud <= 7207) baud = 7200; | |
390 | else if (baud <= 9612) baud = 9600; | |
391 | else if (baud <= 14428) baud = 14400; | |
392 | else if (baud <= 16062) baud = 16000; | |
393 | else if (baud <= 19250) baud = 19200; | |
394 | else if (baud <= 28912) baud = 28800; | |
395 | else if (baud <= 38601) baud = 38400; | |
396 | else if (baud <= 51558) baud = 51200; | |
397 | else if (baud <= 56280) baud = 56000; | |
398 | else if (baud <= 58053) baud = 57600; | |
399 | else if (baud <= 64111) baud = 64000; | |
400 | else if (baud <= 77608) baud = 76800; | |
401 | else if (baud <= 117028) baud = 115200; | |
402 | else if (baud <= 129347) baud = 128000; | |
403 | else if (baud <= 156868) baud = 153600; | |
404 | else if (baud <= 237832) baud = 230400; | |
405 | else if (baud <= 254234) baud = 250000; | |
406 | else if (baud <= 273066) baud = 256000; | |
407 | else if (baud <= 491520) baud = 460800; | |
408 | else if (baud <= 567138) baud = 500000; | |
409 | else if (baud <= 670254) baud = 576000; | |
d1620ca9 JH |
410 | else if (baud < 1000000) |
411 | baud = 921600; | |
412 | else if (baud > 2000000) | |
413 | baud = 2000000; | |
ef8b6bcb CS |
414 | return baud; |
415 | } | |
416 | ||
a509a7e4 | 417 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 418 | { |
1da177e4 LT |
419 | int result; |
420 | ||
2479e2a9 JH |
421 | result = cp210x_set_config_single(port, CP210X_IFC_ENABLE, |
422 | UART_ENABLE); | |
423 | if (result) { | |
424 | dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); | |
425 | return result; | |
1da177e4 LT |
426 | } |
427 | ||
39a66b8d | 428 | /* Configure the termios structure */ |
4cc27bd6 | 429 | cp210x_get_termios(tty, port); |
55b2afbb | 430 | |
cdc32fd6 JH |
431 | /* The baud rate must be initialised on cp2104 */ |
432 | if (tty) | |
433 | cp210x_change_speed(tty, port, NULL); | |
434 | ||
55b2afbb | 435 | return usb_serial_generic_open(tty, port); |
1da177e4 LT |
436 | } |
437 | ||
4cc27bd6 | 438 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 439 | { |
f26788da | 440 | usb_serial_generic_close(port); |
1da177e4 | 441 | |
95bef012 ON |
442 | mutex_lock(&port->serial->disc_mutex); |
443 | if (!port->serial->disconnected) | |
4cc27bd6 | 444 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
95bef012 | 445 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
446 | } |
447 | ||
39a66b8d | 448 | /* |
4cc27bd6 | 449 | * cp210x_get_termios |
39a66b8d CS |
450 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
451 | * from the device, corrects any unsupported values, and configures the | |
452 | * termios structure to reflect the state of the device | |
453 | */ | |
4cc27bd6 | 454 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
455 | struct usb_serial_port *port) |
456 | { | |
457 | unsigned int baud; | |
458 | ||
459 | if (tty) { | |
4cc27bd6 | 460 | cp210x_get_termios_port(tty->driver_data, |
d2ad67b3 V |
461 | &tty->termios->c_cflag, &baud); |
462 | tty_encode_baud_rate(tty, baud, baud); | |
463 | } | |
464 | ||
465 | else { | |
466 | unsigned int cflag; | |
467 | cflag = 0; | |
4cc27bd6 | 468 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
469 | } |
470 | } | |
471 | ||
472 | /* | |
4cc27bd6 CS |
473 | * cp210x_get_termios_port |
474 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 475 | */ |
4cc27bd6 | 476 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 477 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 478 | { |
39a66b8d | 479 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
480 | unsigned int baud; |
481 | unsigned int bits; | |
1da177e4 | 482 | |
7f482fc8 | 483 | cp210x_get_config(port, CP210X_GET_BAUDRATE, &baud, 4); |
1da177e4 | 484 | |
441b62c1 | 485 | dbg("%s - baud rate = %d", __func__, baud); |
d2ad67b3 | 486 | *baudp = baud; |
9ab0f202 | 487 | |
d2ad67b3 | 488 | cflag = *cflagp; |
1da177e4 | 489 | |
4cc27bd6 | 490 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 | 491 | cflag &= ~CSIZE; |
ff7eb602 AC |
492 | switch (bits & BITS_DATA_MASK) { |
493 | case BITS_DATA_5: | |
494 | dbg("%s - data bits = 5", __func__); | |
495 | cflag |= CS5; | |
496 | break; | |
497 | case BITS_DATA_6: | |
498 | dbg("%s - data bits = 6", __func__); | |
499 | cflag |= CS6; | |
500 | break; | |
501 | case BITS_DATA_7: | |
502 | dbg("%s - data bits = 7", __func__); | |
503 | cflag |= CS7; | |
504 | break; | |
505 | case BITS_DATA_8: | |
506 | dbg("%s - data bits = 8", __func__); | |
507 | cflag |= CS8; | |
508 | break; | |
509 | case BITS_DATA_9: | |
510 | dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
511 | __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 AC |
516 | break; |
517 | default: | |
518 | dbg("%s - Unknown number of data bits, using 8", __func__); | |
519 | cflag |= CS8; | |
520 | bits &= ~BITS_DATA_MASK; | |
521 | bits |= BITS_DATA_8; | |
4cc27bd6 | 522 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 523 | break; |
1da177e4 LT |
524 | } |
525 | ||
ff7eb602 AC |
526 | switch (bits & BITS_PARITY_MASK) { |
527 | case BITS_PARITY_NONE: | |
528 | dbg("%s - parity = NONE", __func__); | |
529 | cflag &= ~PARENB; | |
530 | break; | |
531 | case BITS_PARITY_ODD: | |
532 | dbg("%s - parity = ODD", __func__); | |
533 | cflag |= (PARENB|PARODD); | |
534 | break; | |
535 | case BITS_PARITY_EVEN: | |
536 | dbg("%s - parity = EVEN", __func__); | |
537 | cflag &= ~PARODD; | |
538 | cflag |= PARENB; | |
539 | break; | |
540 | case BITS_PARITY_MARK: | |
4b6181ca RK |
541 | dbg("%s - parity = MARK", __func__); |
542 | cflag |= (PARENB|PARODD|CMSPAR); | |
ff7eb602 AC |
543 | break; |
544 | case BITS_PARITY_SPACE: | |
4b6181ca RK |
545 | dbg("%s - parity = SPACE", __func__); |
546 | cflag &= ~PARODD; | |
547 | cflag |= (PARENB|CMSPAR); | |
ff7eb602 AC |
548 | break; |
549 | default: | |
550 | dbg("%s - Unknown parity mode, disabling parity", __func__); | |
551 | cflag &= ~PARENB; | |
552 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 553 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 554 | break; |
1da177e4 LT |
555 | } |
556 | ||
557 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
558 | switch (bits & BITS_STOP_MASK) { |
559 | case BITS_STOP_1: | |
560 | dbg("%s - stop bits = 1", __func__); | |
561 | break; | |
562 | case BITS_STOP_1_5: | |
563 | dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
564 | __func__); | |
565 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 566 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
567 | break; |
568 | case BITS_STOP_2: | |
569 | dbg("%s - stop bits = 2", __func__); | |
570 | cflag |= CSTOPB; | |
571 | break; | |
572 | default: | |
573 | dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
574 | __func__); | |
575 | bits &= ~BITS_STOP_MASK; | |
4cc27bd6 | 576 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 577 | break; |
1da177e4 LT |
578 | } |
579 | ||
4cc27bd6 | 580 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 581 | if (modem_ctl[0] & 0x0008) { |
441b62c1 | 582 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
583 | cflag |= CRTSCTS; |
584 | } else { | |
441b62c1 | 585 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
586 | cflag &= ~CRTSCTS; |
587 | } | |
588 | ||
d2ad67b3 | 589 | *cflagp = cflag; |
1da177e4 LT |
590 | } |
591 | ||
e5990874 JH |
592 | /* |
593 | * CP2101 supports the following baud rates: | |
594 | * | |
595 | * 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800, | |
596 | * 38400, 56000, 57600, 115200, 128000, 230400, 460800, 921600 | |
597 | * | |
598 | * CP2102 and CP2103 support the following additional rates: | |
599 | * | |
600 | * 4000, 16000, 51200, 64000, 76800, 153600, 250000, 256000, 500000, | |
601 | * 576000 | |
602 | * | |
603 | * The device will map a requested rate to a supported one, but the result | |
604 | * of requests for rates greater than 1053257 is undefined (see AN205). | |
605 | * | |
606 | * CP2104, CP2105 and CP2110 support most rates up to 2M, 921k and 1M baud, | |
607 | * respectively, with an error less than 1%. The actual rates are determined | |
608 | * by | |
609 | * | |
610 | * div = round(freq / (2 x prescale x request)) | |
611 | * actual = freq / (2 x prescale x div) | |
612 | * | |
613 | * For CP2104 and CP2105 freq is 48Mhz and prescale is 4 for request <= 365bps | |
614 | * or 1 otherwise. | |
615 | * For CP2110 freq is 24Mhz and prescale is 4 for request <= 300bps or 1 | |
616 | * otherwise. | |
617 | */ | |
618 | static void cp210x_change_speed(struct tty_struct *tty, | |
619 | struct usb_serial_port *port, struct ktermios *old_termios) | |
620 | { | |
621 | u32 baud; | |
622 | ||
623 | baud = tty->termios->c_ospeed; | |
624 | ||
d1620ca9 JH |
625 | /* This maps the requested rate to a rate valid on cp2102 or cp2103, |
626 | * or to an arbitrary rate in [1M,2M]. | |
e5990874 JH |
627 | * |
628 | * NOTE: B0 is not implemented. | |
629 | */ | |
630 | baud = cp210x_quantise_baudrate(baud); | |
631 | ||
632 | dbg("%s - setting baud rate to %u", __func__, baud); | |
633 | if (cp210x_set_config(port, CP210X_SET_BAUDRATE, &baud, | |
634 | sizeof(baud))) { | |
635 | dev_warn(&port->dev, "failed to set baud rate to %u\n", baud); | |
636 | if (old_termios) | |
637 | baud = old_termios->c_ospeed; | |
638 | else | |
639 | baud = 9600; | |
640 | } | |
641 | ||
642 | tty_encode_baud_rate(tty, baud, baud); | |
643 | } | |
644 | ||
4cc27bd6 | 645 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 646 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 647 | { |
9ab0f202 | 648 | unsigned int cflag, old_cflag; |
34b76fca | 649 | unsigned int bits; |
39a66b8d | 650 | unsigned int modem_ctl[4]; |
1da177e4 | 651 | |
441b62c1 | 652 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 653 | |
95da310e | 654 | if (!tty) |
1da177e4 | 655 | return; |
9ab0f202 | 656 | |
95da310e | 657 | cflag = tty->termios->c_cflag; |
01e96d28 | 658 | old_cflag = old_termios->c_cflag; |
e5990874 JH |
659 | |
660 | if (tty->termios->c_ospeed != old_termios->c_ospeed) | |
661 | cp210x_change_speed(tty, port, old_termios); | |
1da177e4 | 662 | |
39a66b8d | 663 | /* If the number of data bits is to be updated */ |
1da177e4 | 664 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 665 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
666 | bits &= ~BITS_DATA_MASK; |
667 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
668 | case CS5: |
669 | bits |= BITS_DATA_5; | |
670 | dbg("%s - data bits = 5", __func__); | |
671 | break; | |
672 | case CS6: | |
673 | bits |= BITS_DATA_6; | |
674 | dbg("%s - data bits = 6", __func__); | |
675 | break; | |
676 | case CS7: | |
677 | bits |= BITS_DATA_7; | |
678 | dbg("%s - data bits = 7", __func__); | |
679 | break; | |
680 | case CS8: | |
681 | bits |= BITS_DATA_8; | |
682 | dbg("%s - data bits = 8", __func__); | |
683 | break; | |
684 | /*case CS9: | |
685 | bits |= BITS_DATA_9; | |
686 | dbg("%s - data bits = 9", __func__); | |
687 | break;*/ | |
688 | default: | |
4cc27bd6 | 689 | dbg("cp210x driver does not " |
1da177e4 | 690 | "support the number of bits requested," |
0b238583 | 691 | " using 8 bit mode"); |
1da177e4 LT |
692 | bits |= BITS_DATA_8; |
693 | break; | |
694 | } | |
4cc27bd6 | 695 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 696 | dbg("Number of data bits requested " |
0b238583 | 697 | "not supported by device"); |
1da177e4 LT |
698 | } |
699 | ||
4b6181ca RK |
700 | if ((cflag & (PARENB|PARODD|CMSPAR)) != |
701 | (old_cflag & (PARENB|PARODD|CMSPAR))) { | |
4cc27bd6 | 702 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
703 | bits &= ~BITS_PARITY_MASK; |
704 | if (cflag & PARENB) { | |
4b6181ca RK |
705 | if (cflag & CMSPAR) { |
706 | if (cflag & PARODD) { | |
707 | bits |= BITS_PARITY_MARK; | |
708 | dbg("%s - parity = MARK", __func__); | |
709 | } else { | |
710 | bits |= BITS_PARITY_SPACE; | |
711 | dbg("%s - parity = SPACE", __func__); | |
712 | } | |
1da177e4 | 713 | } else { |
4b6181ca RK |
714 | if (cflag & PARODD) { |
715 | bits |= BITS_PARITY_ODD; | |
716 | dbg("%s - parity = ODD", __func__); | |
717 | } else { | |
718 | bits |= BITS_PARITY_EVEN; | |
719 | dbg("%s - parity = EVEN", __func__); | |
720 | } | |
1da177e4 LT |
721 | } |
722 | } | |
4cc27bd6 | 723 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
0b238583 | 724 | dbg("Parity mode not supported by device"); |
1da177e4 LT |
725 | } |
726 | ||
727 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 728 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
729 | bits &= ~BITS_STOP_MASK; |
730 | if (cflag & CSTOPB) { | |
731 | bits |= BITS_STOP_2; | |
441b62c1 | 732 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
733 | } else { |
734 | bits |= BITS_STOP_1; | |
441b62c1 | 735 | dbg("%s - stop bits = 1", __func__); |
1da177e4 | 736 | } |
4cc27bd6 | 737 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
97324955 | 738 | dbg("Number of stop bits requested " |
0b238583 | 739 | "not supported by device"); |
1da177e4 | 740 | } |
39a66b8d CS |
741 | |
742 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 743 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 744 | dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", |
441b62c1 | 745 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d CS |
746 | modem_ctl[2], modem_ctl[3]); |
747 | ||
748 | if (cflag & CRTSCTS) { | |
749 | modem_ctl[0] &= ~0x7B; | |
750 | modem_ctl[0] |= 0x09; | |
751 | modem_ctl[1] = 0x80; | |
441b62c1 | 752 | dbg("%s - flow control = CRTSCTS", __func__); |
39a66b8d CS |
753 | } else { |
754 | modem_ctl[0] &= ~0x7B; | |
755 | modem_ctl[0] |= 0x01; | |
756 | modem_ctl[1] |= 0x40; | |
441b62c1 | 757 | dbg("%s - flow control = NONE", __func__); |
39a66b8d CS |
758 | } |
759 | ||
760 | dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
441b62c1 | 761 | __func__, modem_ctl[0], modem_ctl[1], |
39a66b8d | 762 | modem_ctl[2], modem_ctl[3]); |
4cc27bd6 | 763 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
764 | } |
765 | ||
766 | } | |
767 | ||
20b9d177 | 768 | static int cp210x_tiocmset (struct tty_struct *tty, |
39a66b8d CS |
769 | unsigned int set, unsigned int clear) |
770 | { | |
95da310e | 771 | struct usb_serial_port *port = tty->driver_data; |
20b9d177 | 772 | return cp210x_tiocmset_port(port, set, clear); |
d2ad67b3 V |
773 | } |
774 | ||
20b9d177 | 775 | static int cp210x_tiocmset_port(struct usb_serial_port *port, |
d2ad67b3 V |
776 | unsigned int set, unsigned int clear) |
777 | { | |
b2bdd1f5 | 778 | unsigned int control = 0; |
39a66b8d | 779 | |
39a66b8d CS |
780 | if (set & TIOCM_RTS) { |
781 | control |= CONTROL_RTS; | |
782 | control |= CONTROL_WRITE_RTS; | |
783 | } | |
784 | if (set & TIOCM_DTR) { | |
785 | control |= CONTROL_DTR; | |
786 | control |= CONTROL_WRITE_DTR; | |
787 | } | |
788 | if (clear & TIOCM_RTS) { | |
789 | control &= ~CONTROL_RTS; | |
790 | control |= CONTROL_WRITE_RTS; | |
791 | } | |
792 | if (clear & TIOCM_DTR) { | |
793 | control &= ~CONTROL_DTR; | |
794 | control |= CONTROL_WRITE_DTR; | |
795 | } | |
796 | ||
441b62c1 | 797 | dbg("%s - control = 0x%.4x", __func__, control); |
39a66b8d | 798 | |
4cc27bd6 | 799 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
800 | } |
801 | ||
d94c7bd4 AC |
802 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
803 | { | |
804 | if (on) | |
20b9d177 | 805 | cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0); |
d94c7bd4 | 806 | else |
20b9d177 | 807 | cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS); |
d94c7bd4 AC |
808 | } |
809 | ||
60b33c13 | 810 | static int cp210x_tiocmget (struct tty_struct *tty) |
39a66b8d | 811 | { |
95da310e | 812 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
813 | unsigned int control; |
814 | int result; | |
39a66b8d | 815 | |
4cc27bd6 | 816 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
817 | |
818 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
819 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
820 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
821 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
822 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
823 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
824 | ||
441b62c1 | 825 | dbg("%s - control = 0x%.2x", __func__, control); |
39a66b8d CS |
826 | |
827 | return result; | |
1da177e4 LT |
828 | } |
829 | ||
4cc27bd6 | 830 | static void cp210x_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 831 | { |
95da310e | 832 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 833 | unsigned int state; |
1da177e4 | 834 | |
1da177e4 LT |
835 | if (break_state == 0) |
836 | state = BREAK_OFF; | |
837 | else | |
838 | state = BREAK_ON; | |
441b62c1 | 839 | dbg("%s - turning break %s", __func__, |
ff7eb602 | 840 | state == BREAK_OFF ? "off" : "on"); |
4cc27bd6 | 841 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
842 | } |
843 | ||
4cc27bd6 | 844 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 845 | { |
a5360a53 PF |
846 | struct cp210x_port_private *port_priv; |
847 | int i; | |
848 | ||
4cc27bd6 | 849 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 | 850 | usb_reset_device(serial->dev); |
a5360a53 PF |
851 | |
852 | for (i = 0; i < serial->num_ports; i++) { | |
853 | port_priv = kzalloc(sizeof(*port_priv), GFP_KERNEL); | |
854 | if (!port_priv) | |
855 | return -ENOMEM; | |
856 | ||
857 | memset(port_priv, 0x00, sizeof(*port_priv)); | |
858 | port_priv->bInterfaceNumber = | |
859 | serial->interface->cur_altsetting->desc.bInterfaceNumber; | |
860 | ||
861 | usb_set_serial_port_data(serial->port[i], port_priv); | |
862 | } | |
863 | ||
1da177e4 LT |
864 | return 0; |
865 | } | |
866 | ||
a5360a53 PF |
867 | static void cp210x_release(struct usb_serial *serial) |
868 | { | |
869 | struct cp210x_port_private *port_priv; | |
870 | int i; | |
871 | ||
872 | for (i = 0; i < serial->num_ports; i++) { | |
873 | port_priv = usb_get_serial_port_data(serial->port[i]); | |
874 | kfree(port_priv); | |
875 | usb_set_serial_port_data(serial->port[i], NULL); | |
876 | } | |
877 | } | |
878 | ||
68e24113 | 879 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
880 | |
881 | MODULE_DESCRIPTION(DRIVER_DESC); | |
882 | MODULE_VERSION(DRIVER_VERSION); | |
883 | MODULE_LICENSE("GPL"); | |
884 | ||
885 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
886 | MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |