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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 *); | |
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 | |
7d40d7e8 | 55 | static const struct usb_device_id id_table[] = { |
2f1136d1 | 56 | { USB_DEVICE(0x045B, 0x0053) }, /* Renesas RX610 RX-Stick */ |
5091b587 | 57 | { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ |
59fba744 | 58 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
5b22a32e | 59 | { USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
b7c7cbc8 | 60 | { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ |
1f4f714f | 61 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
b7c7cbc8 | 62 | { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ |
eefd9029 CS |
63 | { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */ |
64 | { USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */ | |
198b9517 | 65 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 66 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 67 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
198b9517 | 68 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
69 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
70 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
b7c7cbc8 | 71 | { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */ |
0601e116 AK |
72 | { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */ |
73 | { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ | |
5de8b3ac | 74 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 75 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
eefd9029 CS |
76 | { USB_DEVICE(0x10C4, 0x8044) }, /* Cygnal Debug Adapter */ |
77 | { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */ | |
92f5cae2 | 78 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 79 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 80 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
eefd9029 | 81 | { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */ |
e988fc8a | 82 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
5bbfa6f4 | 83 | { USB_DEVICE(0x10C4, 0x80C4) }, /* Cygnal Integrated Products, Inc., Optris infrared thermometer */ |
e988fc8a | 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 */ |
3fcc8f96 | 94 | { USB_DEVICE(0x10C4, 0x815F) }, /* Timewave HamLinkUSB */ |
eefd9029 | 95 | { USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */ |
c6535668 | 96 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 97 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
08e87d0d | 98 | { USB_DEVICE(0x10C4, 0x81A9) }, /* Multiplex RC Interface */ |
59fba744 | 99 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
eefd9029 | 100 | { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */ |
78001e3d BS |
101 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
102 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 103 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
bd07c551 | 104 | { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */ |
b7c7cbc8 | 105 | { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ |
78001e3d | 106 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 107 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
25985edc | 108 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demonstration module */ |
c851e83f | 109 | { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */ |
b7c7cbc8 | 110 | { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ |
ba0f332c | 111 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
8bf16ba7 | 112 | { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */ |
881e3c98 | 113 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
faea63f7 | 114 | { USB_DEVICE(0x10C4, 0x83D8) }, /* DekTec DTA Plus VHF/UHF Booster/Attenuator */ |
8bf16ba7 | 115 | { USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */ |
faea63f7 | 116 | { USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */ |
d23bac9f | 117 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
541e05ec | 118 | { USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */ |
4eff0b40 CS |
119 | { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */ |
120 | { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */ | |
121 | { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */ | |
122 | { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */ | |
e988fc8a | 123 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 124 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
a5360a53 PF |
125 | { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */ |
126 | { USB_DEVICE(0x10C4, 0xEA80) }, /* Silicon Labs factory default */ | |
eefd9029 | 127 | { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */ |
5de8b3ac CS |
128 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
129 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
130 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
131 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 132 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 133 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 134 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 135 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
3fcc8f96 CS |
136 | { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */ |
137 | { USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */ | |
5de8b3ac | 138 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
3fcc8f96 CS |
139 | { USB_DEVICE(0x166A, 0x0304) }, /* Clipsal 5000CT2 C-Bus Black and White Touchscreen */ |
140 | { USB_DEVICE(0x166A, 0x0305) }, /* Clipsal C-5000CT2 C-Bus Spectrum Colour Touchscreen */ | |
141 | { USB_DEVICE(0x166A, 0x0401) }, /* Clipsal L51xx C-Bus Architectural Dimmer */ | |
142 | { USB_DEVICE(0x166A, 0x0101) }, /* Clipsal 5560884 C-Bus Multi-room Audio Matrix Switcher */ | |
b0ce84d5 | 143 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
356c5a48 AIB |
144 | { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */ |
145 | { USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */ | |
146 | { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */ | |
147 | { USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */ | |
c6c1e449 BT |
148 | { USB_DEVICE(0x17A8, 0x0001) }, /* Kamstrup Optical Eye/3-wire */ |
149 | { USB_DEVICE(0x17A8, 0x0005) }, /* Kamstrup M-Bus Master MultiPort 250D */ | |
541e05ec CS |
150 | { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ |
151 | { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ | |
152 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ | |
93ad03d6 | 153 | { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */ |
3fcc8f96 CS |
154 | { USB_DEVICE(0x1E29, 0x0102) }, /* Festo CPX-USB */ |
155 | { USB_DEVICE(0x1E29, 0x0501) }, /* Festo CMSP */ | |
791b7d7c | 156 | { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */ |
3fcc8f96 CS |
157 | { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */ |
158 | { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */ | |
541e05ec | 159 | { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ |
39a66b8d | 160 | { } /* Terminating Entry */ |
1da177e4 LT |
161 | }; |
162 | ||
ff7eb602 | 163 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 164 | |
4295fe77 | 165 | struct cp210x_serial_private { |
a5360a53 PF |
166 | __u8 bInterfaceNumber; |
167 | }; | |
168 | ||
4cc27bd6 | 169 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
170 | .driver = { |
171 | .owner = THIS_MODULE, | |
4cc27bd6 | 172 | .name = "cp210x", |
18fcac35 | 173 | }, |
1da177e4 | 174 | .id_table = id_table, |
1da177e4 | 175 | .num_ports = 1, |
aea006b9 | 176 | .bulk_in_size = 256, |
d4e598f6 | 177 | .bulk_out_size = 256, |
4cc27bd6 CS |
178 | .open = cp210x_open, |
179 | .close = cp210x_close, | |
180 | .break_ctl = cp210x_break_ctl, | |
181 | .set_termios = cp210x_set_termios, | |
182 | .tiocmget = cp210x_tiocmget, | |
183 | .tiocmset = cp210x_tiocmset, | |
184 | .attach = cp210x_startup, | |
a5360a53 | 185 | .release = cp210x_release, |
d14fc1a7 | 186 | .dtr_rts = cp210x_dtr_rts |
1da177e4 LT |
187 | }; |
188 | ||
08a4f6bc AS |
189 | static struct usb_serial_driver * const serial_drivers[] = { |
190 | &cp210x_device, NULL | |
191 | }; | |
192 | ||
39a66b8d | 193 | /* Config request types */ |
32445605 PF |
194 | #define REQTYPE_HOST_TO_INTERFACE 0x41 |
195 | #define REQTYPE_INTERFACE_TO_HOST 0xc1 | |
196 | #define REQTYPE_HOST_TO_DEVICE 0x40 | |
197 | #define REQTYPE_DEVICE_TO_HOST 0xc0 | |
1da177e4 | 198 | |
93ef1f1f CS |
199 | /* Config request codes */ |
200 | #define CP210X_IFC_ENABLE 0x00 | |
201 | #define CP210X_SET_BAUDDIV 0x01 | |
202 | #define CP210X_GET_BAUDDIV 0x02 | |
203 | #define CP210X_SET_LINE_CTL 0x03 | |
204 | #define CP210X_GET_LINE_CTL 0x04 | |
205 | #define CP210X_SET_BREAK 0x05 | |
206 | #define CP210X_IMM_CHAR 0x06 | |
207 | #define CP210X_SET_MHS 0x07 | |
208 | #define CP210X_GET_MDMSTS 0x08 | |
209 | #define CP210X_SET_XON 0x09 | |
210 | #define CP210X_SET_XOFF 0x0A | |
211 | #define CP210X_SET_EVENTMASK 0x0B | |
212 | #define CP210X_GET_EVENTMASK 0x0C | |
213 | #define CP210X_SET_CHAR 0x0D | |
214 | #define CP210X_GET_CHARS 0x0E | |
215 | #define CP210X_GET_PROPS 0x0F | |
216 | #define CP210X_GET_COMM_STATUS 0x10 | |
217 | #define CP210X_RESET 0x11 | |
218 | #define CP210X_PURGE 0x12 | |
219 | #define CP210X_SET_FLOW 0x13 | |
220 | #define CP210X_GET_FLOW 0x14 | |
221 | #define CP210X_EMBED_EVENTS 0x15 | |
222 | #define CP210X_GET_EVENTSTATE 0x16 | |
223 | #define CP210X_SET_CHARS 0x19 | |
7f482fc8 PF |
224 | #define CP210X_GET_BAUDRATE 0x1D |
225 | #define CP210X_SET_BAUDRATE 0x1E | |
93ef1f1f CS |
226 | |
227 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
228 | #define UART_ENABLE 0x0001 |
229 | #define UART_DISABLE 0x0000 | |
230 | ||
93ef1f1f | 231 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
232 | #define BAUD_RATE_GEN_FREQ 0x384000 |
233 | ||
93ef1f1f | 234 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 235 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 236 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
237 | #define BITS_DATA_6 0X0600 |
238 | #define BITS_DATA_7 0X0700 | |
239 | #define BITS_DATA_8 0X0800 | |
240 | #define BITS_DATA_9 0X0900 | |
241 | ||
242 | #define BITS_PARITY_MASK 0x00f0 | |
243 | #define BITS_PARITY_NONE 0x0000 | |
244 | #define BITS_PARITY_ODD 0x0010 | |
245 | #define BITS_PARITY_EVEN 0x0020 | |
246 | #define BITS_PARITY_MARK 0x0030 | |
247 | #define BITS_PARITY_SPACE 0x0040 | |
248 | ||
249 | #define BITS_STOP_MASK 0x000f | |
250 | #define BITS_STOP_1 0x0000 | |
251 | #define BITS_STOP_1_5 0x0001 | |
252 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 253 | |
93ef1f1f | 254 | /* CP210X_SET_BREAK */ |
72916791 CS |
255 | #define BREAK_ON 0x0001 |
256 | #define BREAK_OFF 0x0000 | |
1da177e4 | 257 | |
93ef1f1f | 258 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
259 | #define CONTROL_DTR 0x0001 |
260 | #define CONTROL_RTS 0x0002 | |
261 | #define CONTROL_CTS 0x0010 | |
262 | #define CONTROL_DSR 0x0020 | |
263 | #define CONTROL_RING 0x0040 | |
264 | #define CONTROL_DCD 0x0080 | |
265 | #define CONTROL_WRITE_DTR 0x0100 | |
266 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 267 | |
39a66b8d | 268 | /* |
4cc27bd6 CS |
269 | * cp210x_get_config |
270 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
271 | * 'size' is specified in bytes. |
272 | * 'data' is a pointer to a pre-allocated array of integers large | |
273 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
274 | */ | |
4cc27bd6 | 275 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 276 | unsigned int *data, int size) |
1da177e4 LT |
277 | { |
278 | struct usb_serial *serial = port->serial; | |
4295fe77 | 279 | struct cp210x_serial_private *spriv = usb_get_serial_data(serial); |
53ebb3b8 | 280 | __le32 *buf; |
39a66b8d CS |
281 | int result, i, length; |
282 | ||
283 | /* Number of integers required to contain the array */ | |
284 | length = (((size - 1) | 3) + 1)/4; | |
285 | ||
53ebb3b8 | 286 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 287 | if (!buf) { |
441b62c1 | 288 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
289 | return -ENOMEM; |
290 | } | |
1da177e4 | 291 | |
39a66b8d | 292 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 293 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
32445605 | 294 | request, REQTYPE_INTERFACE_TO_HOST, 0x0000, |
4295fe77 | 295 | spriv->bInterfaceNumber, buf, size, |
2d5733fc | 296 | USB_CTRL_GET_TIMEOUT); |
1da177e4 | 297 | |
39a66b8d | 298 | /* Convert data into an array of integers */ |
ff7eb602 | 299 | for (i = 0; i < length; i++) |
39a66b8d | 300 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 301 | |
39a66b8d | 302 | kfree(buf); |
1da177e4 | 303 | |
39a66b8d | 304 | if (result != size) { |
660f3b14 GKH |
305 | dev_dbg(&port->dev, "%s - Unable to send config request, request=0x%x size=%d result=%d\n", |
306 | __func__, request, size, result); | |
2479e2a9 JH |
307 | if (result > 0) |
308 | result = -EPROTO; | |
309 | ||
310 | return result; | |
39a66b8d | 311 | } |
1da177e4 | 312 | |
39a66b8d | 313 | return 0; |
1da177e4 LT |
314 | } |
315 | ||
39a66b8d | 316 | /* |
4cc27bd6 CS |
317 | * cp210x_set_config |
318 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
319 | * Values less than 16 bits wide are sent directly |
320 | * 'size' is specified in bytes. | |
321 | */ | |
4cc27bd6 | 322 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 323 | unsigned int *data, int size) |
1da177e4 LT |
324 | { |
325 | struct usb_serial *serial = port->serial; | |
4295fe77 | 326 | struct cp210x_serial_private *spriv = usb_get_serial_data(serial); |
53ebb3b8 | 327 | __le32 *buf; |
39a66b8d | 328 | int result, i, length; |
1da177e4 | 329 | |
39a66b8d CS |
330 | /* Number of integers required to contain the array */ |
331 | length = (((size - 1) | 3) + 1)/4; | |
332 | ||
53ebb3b8 | 333 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d CS |
334 | if (!buf) { |
335 | dev_err(&port->dev, "%s - out of memory.\n", | |
441b62c1 | 336 | __func__); |
39a66b8d CS |
337 | return -ENOMEM; |
338 | } | |
339 | ||
340 | /* Array of integers into bytes */ | |
341 | for (i = 0; i < length; i++) | |
342 | buf[i] = cpu_to_le32(data[i]); | |
343 | ||
344 | if (size > 2) { | |
ff7eb602 | 345 | result = usb_control_msg(serial->dev, |
39a66b8d | 346 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 347 | request, REQTYPE_HOST_TO_INTERFACE, 0x0000, |
4295fe77 | 348 | spriv->bInterfaceNumber, buf, size, |
2d5733fc | 349 | USB_CTRL_SET_TIMEOUT); |
39a66b8d | 350 | } else { |
ff7eb602 | 351 | result = usb_control_msg(serial->dev, |
39a66b8d | 352 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 353 | request, REQTYPE_HOST_TO_INTERFACE, data[0], |
4295fe77 | 354 | spriv->bInterfaceNumber, NULL, 0, |
2d5733fc | 355 | USB_CTRL_SET_TIMEOUT); |
1da177e4 LT |
356 | } |
357 | ||
39a66b8d CS |
358 | kfree(buf); |
359 | ||
360 | if ((size > 2 && result != size) || result < 0) { | |
660f3b14 GKH |
361 | dev_dbg(&port->dev, "%s - Unable to send request, request=0x%x size=%d result=%d\n", |
362 | __func__, request, size, result); | |
2479e2a9 JH |
363 | if (result > 0) |
364 | result = -EPROTO; | |
365 | ||
366 | return result; | |
39a66b8d | 367 | } |
1da177e4 LT |
368 | |
369 | return 0; | |
370 | } | |
371 | ||
39a66b8d | 372 | /* |
4cc27bd6 CS |
373 | * cp210x_set_config_single |
374 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
375 | * without requiring an integer pointer |
376 | */ | |
4cc27bd6 | 377 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
378 | u8 request, unsigned int data) |
379 | { | |
4cc27bd6 | 380 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
381 | } |
382 | ||
ef8b6bcb | 383 | /* |
4cc27bd6 | 384 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
385 | * Quantises the baud rate as per AN205 Table 1 |
386 | */ | |
4cc27bd6 | 387 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) { |
be125d9c JH |
388 | if (baud <= 300) |
389 | baud = 300; | |
ef8b6bcb CS |
390 | else if (baud <= 600) baud = 600; |
391 | else if (baud <= 1200) baud = 1200; | |
392 | else if (baud <= 1800) baud = 1800; | |
393 | else if (baud <= 2400) baud = 2400; | |
394 | else if (baud <= 4000) baud = 4000; | |
395 | else if (baud <= 4803) baud = 4800; | |
396 | else if (baud <= 7207) baud = 7200; | |
397 | else if (baud <= 9612) baud = 9600; | |
398 | else if (baud <= 14428) baud = 14400; | |
399 | else if (baud <= 16062) baud = 16000; | |
400 | else if (baud <= 19250) baud = 19200; | |
401 | else if (baud <= 28912) baud = 28800; | |
402 | else if (baud <= 38601) baud = 38400; | |
403 | else if (baud <= 51558) baud = 51200; | |
404 | else if (baud <= 56280) baud = 56000; | |
405 | else if (baud <= 58053) baud = 57600; | |
406 | else if (baud <= 64111) baud = 64000; | |
407 | else if (baud <= 77608) baud = 76800; | |
408 | else if (baud <= 117028) baud = 115200; | |
409 | else if (baud <= 129347) baud = 128000; | |
410 | else if (baud <= 156868) baud = 153600; | |
411 | else if (baud <= 237832) baud = 230400; | |
412 | else if (baud <= 254234) baud = 250000; | |
413 | else if (baud <= 273066) baud = 256000; | |
414 | else if (baud <= 491520) baud = 460800; | |
415 | else if (baud <= 567138) baud = 500000; | |
416 | else if (baud <= 670254) baud = 576000; | |
d1620ca9 JH |
417 | else if (baud < 1000000) |
418 | baud = 921600; | |
419 | else if (baud > 2000000) | |
420 | baud = 2000000; | |
ef8b6bcb CS |
421 | return baud; |
422 | } | |
423 | ||
a509a7e4 | 424 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 425 | { |
1da177e4 LT |
426 | int result; |
427 | ||
2479e2a9 JH |
428 | result = cp210x_set_config_single(port, CP210X_IFC_ENABLE, |
429 | UART_ENABLE); | |
430 | if (result) { | |
431 | dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); | |
432 | return result; | |
1da177e4 LT |
433 | } |
434 | ||
39a66b8d | 435 | /* Configure the termios structure */ |
4cc27bd6 | 436 | cp210x_get_termios(tty, port); |
55b2afbb | 437 | |
cdc32fd6 JH |
438 | /* The baud rate must be initialised on cp2104 */ |
439 | if (tty) | |
440 | cp210x_change_speed(tty, port, NULL); | |
441 | ||
55b2afbb | 442 | return usb_serial_generic_open(tty, port); |
1da177e4 LT |
443 | } |
444 | ||
4cc27bd6 | 445 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 446 | { |
f26788da | 447 | usb_serial_generic_close(port); |
1da177e4 | 448 | |
95bef012 ON |
449 | mutex_lock(&port->serial->disc_mutex); |
450 | if (!port->serial->disconnected) | |
4cc27bd6 | 451 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
95bef012 | 452 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
453 | } |
454 | ||
39a66b8d | 455 | /* |
4cc27bd6 | 456 | * cp210x_get_termios |
39a66b8d CS |
457 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
458 | * from the device, corrects any unsupported values, and configures the | |
459 | * termios structure to reflect the state of the device | |
460 | */ | |
4cc27bd6 | 461 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
462 | struct usb_serial_port *port) |
463 | { | |
464 | unsigned int baud; | |
465 | ||
466 | if (tty) { | |
4cc27bd6 | 467 | cp210x_get_termios_port(tty->driver_data, |
adc8d746 | 468 | &tty->termios.c_cflag, &baud); |
d2ad67b3 V |
469 | tty_encode_baud_rate(tty, baud, baud); |
470 | } | |
471 | ||
472 | else { | |
473 | unsigned int cflag; | |
474 | cflag = 0; | |
4cc27bd6 | 475 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
476 | } |
477 | } | |
478 | ||
479 | /* | |
4cc27bd6 CS |
480 | * cp210x_get_termios_port |
481 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 482 | */ |
4cc27bd6 | 483 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 484 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 485 | { |
660f3b14 | 486 | struct device *dev = &port->dev; |
39a66b8d | 487 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
488 | unsigned int baud; |
489 | unsigned int bits; | |
1da177e4 | 490 | |
7f482fc8 | 491 | cp210x_get_config(port, CP210X_GET_BAUDRATE, &baud, 4); |
1da177e4 | 492 | |
660f3b14 | 493 | dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); |
d2ad67b3 | 494 | *baudp = baud; |
9ab0f202 | 495 | |
d2ad67b3 | 496 | cflag = *cflagp; |
1da177e4 | 497 | |
4cc27bd6 | 498 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 | 499 | cflag &= ~CSIZE; |
ff7eb602 AC |
500 | switch (bits & BITS_DATA_MASK) { |
501 | case BITS_DATA_5: | |
660f3b14 | 502 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
ff7eb602 AC |
503 | cflag |= CS5; |
504 | break; | |
505 | case BITS_DATA_6: | |
660f3b14 | 506 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
ff7eb602 AC |
507 | cflag |= CS6; |
508 | break; | |
509 | case BITS_DATA_7: | |
660f3b14 | 510 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
ff7eb602 AC |
511 | cflag |= CS7; |
512 | break; | |
513 | case BITS_DATA_8: | |
660f3b14 | 514 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
ff7eb602 AC |
515 | cflag |= CS8; |
516 | break; | |
517 | case BITS_DATA_9: | |
660f3b14 | 518 | dev_dbg(dev, "%s - data bits = 9 (not supported, using 8 data bits)\n", __func__); |
ff7eb602 AC |
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 AC |
523 | break; |
524 | default: | |
660f3b14 | 525 | dev_dbg(dev, "%s - Unknown number of data bits, using 8\n", __func__); |
ff7eb602 AC |
526 | cflag |= CS8; |
527 | bits &= ~BITS_DATA_MASK; | |
528 | bits |= BITS_DATA_8; | |
4cc27bd6 | 529 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 530 | break; |
1da177e4 LT |
531 | } |
532 | ||
ff7eb602 AC |
533 | switch (bits & BITS_PARITY_MASK) { |
534 | case BITS_PARITY_NONE: | |
660f3b14 | 535 | dev_dbg(dev, "%s - parity = NONE\n", __func__); |
ff7eb602 AC |
536 | cflag &= ~PARENB; |
537 | break; | |
538 | case BITS_PARITY_ODD: | |
660f3b14 | 539 | dev_dbg(dev, "%s - parity = ODD\n", __func__); |
ff7eb602 AC |
540 | cflag |= (PARENB|PARODD); |
541 | break; | |
542 | case BITS_PARITY_EVEN: | |
660f3b14 | 543 | dev_dbg(dev, "%s - parity = EVEN\n", __func__); |
ff7eb602 AC |
544 | cflag &= ~PARODD; |
545 | cflag |= PARENB; | |
546 | break; | |
547 | case BITS_PARITY_MARK: | |
660f3b14 | 548 | dev_dbg(dev, "%s - parity = MARK\n", __func__); |
4b6181ca | 549 | cflag |= (PARENB|PARODD|CMSPAR); |
ff7eb602 AC |
550 | break; |
551 | case BITS_PARITY_SPACE: | |
660f3b14 | 552 | dev_dbg(dev, "%s - parity = SPACE\n", __func__); |
4b6181ca RK |
553 | cflag &= ~PARODD; |
554 | cflag |= (PARENB|CMSPAR); | |
ff7eb602 AC |
555 | break; |
556 | default: | |
660f3b14 | 557 | dev_dbg(dev, "%s - Unknown parity mode, disabling parity\n", __func__); |
ff7eb602 AC |
558 | cflag &= ~PARENB; |
559 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 560 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 561 | break; |
1da177e4 LT |
562 | } |
563 | ||
564 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
565 | switch (bits & BITS_STOP_MASK) { |
566 | case BITS_STOP_1: | |
660f3b14 | 567 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
ff7eb602 AC |
568 | break; |
569 | case BITS_STOP_1_5: | |
660f3b14 | 570 | dev_dbg(dev, "%s - stop bits = 1.5 (not supported, using 1 stop bit)\n", __func__); |
ff7eb602 | 571 | bits &= ~BITS_STOP_MASK; |
4cc27bd6 | 572 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
573 | break; |
574 | case BITS_STOP_2: | |
660f3b14 | 575 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
ff7eb602 AC |
576 | cflag |= CSTOPB; |
577 | break; | |
578 | default: | |
660f3b14 | 579 | dev_dbg(dev, "%s - Unknown number of stop bits, using 1 stop bit\n", __func__); |
ff7eb602 | 580 | bits &= ~BITS_STOP_MASK; |
4cc27bd6 | 581 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 582 | break; |
1da177e4 LT |
583 | } |
584 | ||
4cc27bd6 | 585 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 586 | if (modem_ctl[0] & 0x0008) { |
660f3b14 | 587 | dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); |
39a66b8d CS |
588 | cflag |= CRTSCTS; |
589 | } else { | |
660f3b14 | 590 | dev_dbg(dev, "%s - flow control = NONE\n", __func__); |
39a66b8d CS |
591 | cflag &= ~CRTSCTS; |
592 | } | |
593 | ||
d2ad67b3 | 594 | *cflagp = cflag; |
1da177e4 LT |
595 | } |
596 | ||
e5990874 JH |
597 | /* |
598 | * CP2101 supports the following baud rates: | |
599 | * | |
600 | * 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800, | |
601 | * 38400, 56000, 57600, 115200, 128000, 230400, 460800, 921600 | |
602 | * | |
603 | * CP2102 and CP2103 support the following additional rates: | |
604 | * | |
605 | * 4000, 16000, 51200, 64000, 76800, 153600, 250000, 256000, 500000, | |
606 | * 576000 | |
607 | * | |
608 | * The device will map a requested rate to a supported one, but the result | |
609 | * of requests for rates greater than 1053257 is undefined (see AN205). | |
610 | * | |
611 | * CP2104, CP2105 and CP2110 support most rates up to 2M, 921k and 1M baud, | |
612 | * respectively, with an error less than 1%. The actual rates are determined | |
613 | * by | |
614 | * | |
615 | * div = round(freq / (2 x prescale x request)) | |
616 | * actual = freq / (2 x prescale x div) | |
617 | * | |
618 | * For CP2104 and CP2105 freq is 48Mhz and prescale is 4 for request <= 365bps | |
619 | * or 1 otherwise. | |
620 | * For CP2110 freq is 24Mhz and prescale is 4 for request <= 300bps or 1 | |
621 | * otherwise. | |
622 | */ | |
623 | static void cp210x_change_speed(struct tty_struct *tty, | |
624 | struct usb_serial_port *port, struct ktermios *old_termios) | |
625 | { | |
626 | u32 baud; | |
627 | ||
adc8d746 | 628 | baud = tty->termios.c_ospeed; |
e5990874 | 629 | |
d1620ca9 JH |
630 | /* This maps the requested rate to a rate valid on cp2102 or cp2103, |
631 | * or to an arbitrary rate in [1M,2M]. | |
e5990874 JH |
632 | * |
633 | * NOTE: B0 is not implemented. | |
634 | */ | |
635 | baud = cp210x_quantise_baudrate(baud); | |
636 | ||
660f3b14 | 637 | dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud); |
e5990874 JH |
638 | if (cp210x_set_config(port, CP210X_SET_BAUDRATE, &baud, |
639 | sizeof(baud))) { | |
640 | dev_warn(&port->dev, "failed to set baud rate to %u\n", baud); | |
641 | if (old_termios) | |
642 | baud = old_termios->c_ospeed; | |
643 | else | |
644 | baud = 9600; | |
645 | } | |
646 | ||
647 | tty_encode_baud_rate(tty, baud, baud); | |
648 | } | |
649 | ||
4cc27bd6 | 650 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 651 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 652 | { |
660f3b14 | 653 | struct device *dev = &port->dev; |
9ab0f202 | 654 | unsigned int cflag, old_cflag; |
34b76fca | 655 | unsigned int bits; |
39a66b8d | 656 | unsigned int modem_ctl[4]; |
1da177e4 | 657 | |
660f3b14 | 658 | dev_dbg(dev, "%s - port %d\n", __func__, port->number); |
1da177e4 | 659 | |
95da310e | 660 | if (!tty) |
1da177e4 | 661 | return; |
9ab0f202 | 662 | |
adc8d746 | 663 | cflag = tty->termios.c_cflag; |
01e96d28 | 664 | old_cflag = old_termios->c_cflag; |
e5990874 | 665 | |
adc8d746 | 666 | if (tty->termios.c_ospeed != old_termios->c_ospeed) |
e5990874 | 667 | cp210x_change_speed(tty, port, old_termios); |
1da177e4 | 668 | |
39a66b8d | 669 | /* If the number of data bits is to be updated */ |
1da177e4 | 670 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 671 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
672 | bits &= ~BITS_DATA_MASK; |
673 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
674 | case CS5: |
675 | bits |= BITS_DATA_5; | |
660f3b14 | 676 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
ff7eb602 AC |
677 | break; |
678 | case CS6: | |
679 | bits |= BITS_DATA_6; | |
660f3b14 | 680 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
ff7eb602 AC |
681 | break; |
682 | case CS7: | |
683 | bits |= BITS_DATA_7; | |
660f3b14 | 684 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
ff7eb602 AC |
685 | break; |
686 | case CS8: | |
687 | bits |= BITS_DATA_8; | |
660f3b14 | 688 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
ff7eb602 AC |
689 | break; |
690 | /*case CS9: | |
691 | bits |= BITS_DATA_9; | |
660f3b14 | 692 | dev_dbg(dev, "%s - data bits = 9\n", __func__); |
ff7eb602 AC |
693 | break;*/ |
694 | default: | |
660f3b14 | 695 | dev_dbg(dev, "cp210x driver does not support the number of bits requested, using 8 bit mode\n"); |
1da177e4 LT |
696 | bits |= BITS_DATA_8; |
697 | break; | |
698 | } | |
4cc27bd6 | 699 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 700 | dev_dbg(dev, "Number of data bits requested not supported by device\n"); |
1da177e4 LT |
701 | } |
702 | ||
4b6181ca RK |
703 | if ((cflag & (PARENB|PARODD|CMSPAR)) != |
704 | (old_cflag & (PARENB|PARODD|CMSPAR))) { | |
4cc27bd6 | 705 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
706 | bits &= ~BITS_PARITY_MASK; |
707 | if (cflag & PARENB) { | |
4b6181ca | 708 | if (cflag & CMSPAR) { |
660f3b14 GKH |
709 | if (cflag & PARODD) { |
710 | bits |= BITS_PARITY_MARK; | |
711 | dev_dbg(dev, "%s - parity = MARK\n", __func__); | |
712 | } else { | |
713 | bits |= BITS_PARITY_SPACE; | |
714 | dev_dbg(dev, "%s - parity = SPACE\n", __func__); | |
715 | } | |
1da177e4 | 716 | } else { |
660f3b14 GKH |
717 | if (cflag & PARODD) { |
718 | bits |= BITS_PARITY_ODD; | |
719 | dev_dbg(dev, "%s - parity = ODD\n", __func__); | |
720 | } else { | |
721 | bits |= BITS_PARITY_EVEN; | |
722 | dev_dbg(dev, "%s - parity = EVEN\n", __func__); | |
723 | } | |
1da177e4 LT |
724 | } |
725 | } | |
4cc27bd6 | 726 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 727 | dev_dbg(dev, "Parity mode not supported by device\n"); |
1da177e4 LT |
728 | } |
729 | ||
730 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 731 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
732 | bits &= ~BITS_STOP_MASK; |
733 | if (cflag & CSTOPB) { | |
734 | bits |= BITS_STOP_2; | |
660f3b14 | 735 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
1da177e4 LT |
736 | } else { |
737 | bits |= BITS_STOP_1; | |
660f3b14 | 738 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
1da177e4 | 739 | } |
4cc27bd6 | 740 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 741 | dev_dbg(dev, "Number of stop bits requested not supported by device\n"); |
1da177e4 | 742 | } |
39a66b8d CS |
743 | |
744 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 745 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
660f3b14 GKH |
746 | dev_dbg(dev, "%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
747 | __func__, modem_ctl[0], modem_ctl[1], | |
748 | modem_ctl[2], modem_ctl[3]); | |
39a66b8d CS |
749 | |
750 | if (cflag & CRTSCTS) { | |
751 | modem_ctl[0] &= ~0x7B; | |
752 | modem_ctl[0] |= 0x09; | |
753 | modem_ctl[1] = 0x80; | |
660f3b14 | 754 | dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); |
39a66b8d CS |
755 | } else { |
756 | modem_ctl[0] &= ~0x7B; | |
757 | modem_ctl[0] |= 0x01; | |
758 | modem_ctl[1] |= 0x40; | |
660f3b14 | 759 | dev_dbg(dev, "%s - flow control = NONE\n", __func__); |
39a66b8d CS |
760 | } |
761 | ||
660f3b14 GKH |
762 | dev_dbg(dev, "%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
763 | __func__, modem_ctl[0], modem_ctl[1], | |
764 | modem_ctl[2], modem_ctl[3]); | |
4cc27bd6 | 765 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
766 | } |
767 | ||
768 | } | |
769 | ||
20b9d177 | 770 | static int cp210x_tiocmset (struct tty_struct *tty, |
39a66b8d CS |
771 | unsigned int set, unsigned int clear) |
772 | { | |
95da310e | 773 | struct usb_serial_port *port = tty->driver_data; |
20b9d177 | 774 | return cp210x_tiocmset_port(port, set, clear); |
d2ad67b3 V |
775 | } |
776 | ||
20b9d177 | 777 | static int cp210x_tiocmset_port(struct usb_serial_port *port, |
d2ad67b3 V |
778 | unsigned int set, unsigned int clear) |
779 | { | |
b2bdd1f5 | 780 | unsigned int control = 0; |
39a66b8d | 781 | |
39a66b8d CS |
782 | if (set & TIOCM_RTS) { |
783 | control |= CONTROL_RTS; | |
784 | control |= CONTROL_WRITE_RTS; | |
785 | } | |
786 | if (set & TIOCM_DTR) { | |
787 | control |= CONTROL_DTR; | |
788 | control |= CONTROL_WRITE_DTR; | |
789 | } | |
790 | if (clear & TIOCM_RTS) { | |
791 | control &= ~CONTROL_RTS; | |
792 | control |= CONTROL_WRITE_RTS; | |
793 | } | |
794 | if (clear & TIOCM_DTR) { | |
795 | control &= ~CONTROL_DTR; | |
796 | control |= CONTROL_WRITE_DTR; | |
797 | } | |
798 | ||
660f3b14 | 799 | dev_dbg(&port->dev, "%s - control = 0x%.4x\n", __func__, control); |
39a66b8d | 800 | |
4cc27bd6 | 801 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
802 | } |
803 | ||
d94c7bd4 AC |
804 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
805 | { | |
806 | if (on) | |
20b9d177 | 807 | cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0); |
d94c7bd4 | 808 | else |
20b9d177 | 809 | cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS); |
d94c7bd4 AC |
810 | } |
811 | ||
60b33c13 | 812 | static int cp210x_tiocmget (struct tty_struct *tty) |
39a66b8d | 813 | { |
95da310e | 814 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
815 | unsigned int control; |
816 | int result; | |
39a66b8d | 817 | |
4cc27bd6 | 818 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
819 | |
820 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
821 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
822 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
823 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
824 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
825 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
826 | ||
660f3b14 | 827 | dev_dbg(&port->dev, "%s - control = 0x%.2x\n", __func__, control); |
39a66b8d CS |
828 | |
829 | return result; | |
1da177e4 LT |
830 | } |
831 | ||
4cc27bd6 | 832 | static void cp210x_break_ctl (struct tty_struct *tty, int break_state) |
1da177e4 | 833 | { |
95da310e | 834 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 835 | unsigned int state; |
1da177e4 | 836 | |
1da177e4 LT |
837 | if (break_state == 0) |
838 | state = BREAK_OFF; | |
839 | else | |
840 | state = BREAK_ON; | |
660f3b14 GKH |
841 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
842 | state == BREAK_OFF ? "off" : "on"); | |
4cc27bd6 | 843 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
844 | } |
845 | ||
4cc27bd6 | 846 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 847 | { |
4295fe77 JH |
848 | struct usb_host_interface *cur_altsetting; |
849 | struct cp210x_serial_private *spriv; | |
a5360a53 | 850 | |
4cc27bd6 | 851 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 | 852 | usb_reset_device(serial->dev); |
a5360a53 | 853 | |
4295fe77 JH |
854 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); |
855 | if (!spriv) | |
856 | return -ENOMEM; | |
a5360a53 | 857 | |
4295fe77 JH |
858 | cur_altsetting = serial->interface->cur_altsetting; |
859 | spriv->bInterfaceNumber = cur_altsetting->desc.bInterfaceNumber; | |
a5360a53 | 860 | |
4295fe77 | 861 | usb_set_serial_data(serial, spriv); |
a5360a53 | 862 | |
1da177e4 LT |
863 | return 0; |
864 | } | |
865 | ||
a5360a53 PF |
866 | static void cp210x_release(struct usb_serial *serial) |
867 | { | |
4295fe77 | 868 | struct cp210x_serial_private *spriv; |
a5360a53 | 869 | |
4295fe77 JH |
870 | spriv = usb_get_serial_data(serial); |
871 | kfree(spriv); | |
a5360a53 PF |
872 | } |
873 | ||
68e24113 | 874 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
875 | |
876 | MODULE_DESCRIPTION(DRIVER_DESC); | |
877 | MODULE_VERSION(DRIVER_VERSION); | |
878 | MODULE_LICENSE("GPL"); |