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 | 26 | |
4cc27bd6 | 27 | #define DRIVER_DESC "Silicon Labs CP210x RS232 serial adaptor driver" |
1da177e4 LT |
28 | |
29 | /* | |
30 | * Function Prototypes | |
31 | */ | |
a509a7e4 | 32 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *); |
4cc27bd6 | 33 | static void cp210x_close(struct usb_serial_port *); |
4f2ab888 | 34 | static void cp210x_get_termios(struct tty_struct *, struct usb_serial_port *); |
4cc27bd6 | 35 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 36 | unsigned int *cflagp, unsigned int *baudp); |
e5990874 JH |
37 | static void cp210x_change_speed(struct tty_struct *, struct usb_serial_port *, |
38 | struct ktermios *); | |
4cc27bd6 | 39 | static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *, |
95da310e | 40 | struct ktermios*); |
60b33c13 | 41 | static int cp210x_tiocmget(struct tty_struct *); |
20b9d177 AC |
42 | static int cp210x_tiocmset(struct tty_struct *, unsigned int, unsigned int); |
43 | static int cp210x_tiocmset_port(struct usb_serial_port *port, | |
d2ad67b3 | 44 | unsigned int, unsigned int); |
4cc27bd6 CS |
45 | static void cp210x_break_ctl(struct tty_struct *, int); |
46 | static int cp210x_startup(struct usb_serial *); | |
a5360a53 | 47 | static void cp210x_release(struct usb_serial *); |
d94c7bd4 | 48 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on); |
1da177e4 | 49 | |
7d40d7e8 | 50 | static const struct usb_device_id id_table[] = { |
2f1136d1 | 51 | { USB_DEVICE(0x045B, 0x0053) }, /* Renesas RX610 RX-Stick */ |
5091b587 | 52 | { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ |
59fba744 | 53 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
5b22a32e | 54 | { USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
b7c7cbc8 | 55 | { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ |
90625070 | 56 | { USB_DEVICE(0x0846, 0x1100) }, /* NetGear Managed Switch M4100 series, M5300 series, M7100 series */ |
1f4f714f | 57 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
b7c7cbc8 | 58 | { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ |
eefd9029 CS |
59 | { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */ |
60 | { USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */ | |
198b9517 | 61 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 62 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 63 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
8de7f4da | 64 | { USB_DEVICE(0x0FDE, 0xCA05) }, /* OWL Wireless Electricity Monitor CM-160 */ |
198b9517 | 65 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
66 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
67 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
b7c7cbc8 | 68 | { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */ |
0601e116 AK |
69 | { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */ |
70 | { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ | |
5de8b3ac | 71 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 72 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
eefd9029 CS |
73 | { USB_DEVICE(0x10C4, 0x8044) }, /* Cygnal Debug Adapter */ |
74 | { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */ | |
92f5cae2 | 75 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 76 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 77 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
eefd9029 | 78 | { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */ |
e988fc8a | 79 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
5bbfa6f4 | 80 | { USB_DEVICE(0x10C4, 0x80C4) }, /* Cygnal Integrated Products, Inc., Optris infrared thermometer */ |
e988fc8a | 81 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ |
92f5cae2 | 82 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 83 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 84 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 85 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
8bf16ba7 | 86 | { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */ |
fc4bd64c JH |
87 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
88 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
a57e82a1 | 89 | { USB_DEVICE(0x2405, 0x0003) }, /* West Mountain Radio RIGblaster Advantage */ |
0bf7a81c | 90 | { USB_DEVICE(0x10C4, 0x8156) }, /* B&G H3000 link cable */ |
e988fc8a | 91 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
3fcc8f96 | 92 | { USB_DEVICE(0x10C4, 0x815F) }, /* Timewave HamLinkUSB */ |
eefd9029 | 93 | { USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */ |
c6535668 | 94 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 95 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
08e87d0d | 96 | { USB_DEVICE(0x10C4, 0x81A9) }, /* Multiplex RC Interface */ |
59fba744 | 97 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
eefd9029 | 98 | { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */ |
78001e3d BS |
99 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
100 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 101 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
bd07c551 | 102 | { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */ |
b7c7cbc8 | 103 | { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ |
78001e3d | 104 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 105 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
25985edc | 106 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demonstration module */ |
72b30079 | 107 | { USB_DEVICE(0x10C4, 0x8281) }, /* Nanotec Plug & Drive */ |
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 */ | |
356fe44f | 120 | { USB_DEVICE(0x10C4, 0x85F8) }, /* Virtenio Preon32 */ |
4eff0b40 CS |
121 | { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */ |
122 | { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */ | |
76811569 SR |
123 | { USB_DEVICE(0x10C4, 0x88A4) }, /* MMB Networks ZigBee USB Device */ |
124 | { USB_DEVICE(0x10C4, 0x88A5) }, /* Planet Innovation Ingeni ZigBee USB Device */ | |
e988fc8a | 125 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 126 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
a5360a53 PF |
127 | { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */ |
128 | { USB_DEVICE(0x10C4, 0xEA80) }, /* Silicon Labs factory default */ | |
eefd9029 | 129 | { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */ |
5de8b3ac CS |
130 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
131 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
132 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
133 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 134 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 135 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 136 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 137 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
3fcc8f96 CS |
138 | { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */ |
139 | { USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */ | |
5de8b3ac | 140 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
3fcc8f96 CS |
141 | { USB_DEVICE(0x166A, 0x0304) }, /* Clipsal 5000CT2 C-Bus Black and White Touchscreen */ |
142 | { USB_DEVICE(0x166A, 0x0305) }, /* Clipsal C-5000CT2 C-Bus Spectrum Colour Touchscreen */ | |
143 | { USB_DEVICE(0x166A, 0x0401) }, /* Clipsal L51xx C-Bus Architectural Dimmer */ | |
144 | { USB_DEVICE(0x166A, 0x0101) }, /* Clipsal 5560884 C-Bus Multi-room Audio Matrix Switcher */ | |
b0ce84d5 | 145 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
356c5a48 AIB |
146 | { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */ |
147 | { USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */ | |
148 | { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */ | |
149 | { USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */ | |
c6c1e449 BT |
150 | { USB_DEVICE(0x17A8, 0x0001) }, /* Kamstrup Optical Eye/3-wire */ |
151 | { USB_DEVICE(0x17A8, 0x0005) }, /* Kamstrup M-Bus Master MultiPort 250D */ | |
541e05ec CS |
152 | { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ |
153 | { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ | |
154 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ | |
b579fa52 | 155 | { USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */ |
93ad03d6 | 156 | { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */ |
3fcc8f96 CS |
157 | { USB_DEVICE(0x1E29, 0x0102) }, /* Festo CPX-USB */ |
158 | { USB_DEVICE(0x1E29, 0x0501) }, /* Festo CMSP */ | |
be3101c2 MK |
159 | { USB_DEVICE(0x1FB9, 0x0100) }, /* Lake Shore Model 121 Current Source */ |
160 | { USB_DEVICE(0x1FB9, 0x0200) }, /* Lake Shore Model 218A Temperature Monitor */ | |
161 | { USB_DEVICE(0x1FB9, 0x0201) }, /* Lake Shore Model 219 Temperature Monitor */ | |
162 | { USB_DEVICE(0x1FB9, 0x0202) }, /* Lake Shore Model 233 Temperature Transmitter */ | |
163 | { USB_DEVICE(0x1FB9, 0x0203) }, /* Lake Shore Model 235 Temperature Transmitter */ | |
164 | { USB_DEVICE(0x1FB9, 0x0300) }, /* Lake Shore Model 335 Temperature Controller */ | |
165 | { USB_DEVICE(0x1FB9, 0x0301) }, /* Lake Shore Model 336 Temperature Controller */ | |
166 | { USB_DEVICE(0x1FB9, 0x0302) }, /* Lake Shore Model 350 Temperature Controller */ | |
167 | { USB_DEVICE(0x1FB9, 0x0303) }, /* Lake Shore Model 371 AC Bridge */ | |
168 | { USB_DEVICE(0x1FB9, 0x0400) }, /* Lake Shore Model 411 Handheld Gaussmeter */ | |
169 | { USB_DEVICE(0x1FB9, 0x0401) }, /* Lake Shore Model 425 Gaussmeter */ | |
170 | { USB_DEVICE(0x1FB9, 0x0402) }, /* Lake Shore Model 455A Gaussmeter */ | |
171 | { USB_DEVICE(0x1FB9, 0x0403) }, /* Lake Shore Model 475A Gaussmeter */ | |
172 | { USB_DEVICE(0x1FB9, 0x0404) }, /* Lake Shore Model 465 Three Axis Gaussmeter */ | |
173 | { USB_DEVICE(0x1FB9, 0x0600) }, /* Lake Shore Model 625A Superconducting MPS */ | |
174 | { USB_DEVICE(0x1FB9, 0x0601) }, /* Lake Shore Model 642A Magnet Power Supply */ | |
175 | { USB_DEVICE(0x1FB9, 0x0602) }, /* Lake Shore Model 648 Magnet Power Supply */ | |
176 | { USB_DEVICE(0x1FB9, 0x0700) }, /* Lake Shore Model 737 VSM Controller */ | |
177 | { USB_DEVICE(0x1FB9, 0x0701) }, /* Lake Shore Model 776 Hall Matrix */ | |
791b7d7c | 178 | { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */ |
3fcc8f96 CS |
179 | { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */ |
180 | { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */ | |
541e05ec | 181 | { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ |
39a66b8d | 182 | { } /* Terminating Entry */ |
1da177e4 LT |
183 | }; |
184 | ||
ff7eb602 | 185 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 186 | |
4295fe77 | 187 | struct cp210x_serial_private { |
a5360a53 PF |
188 | __u8 bInterfaceNumber; |
189 | }; | |
190 | ||
4cc27bd6 | 191 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
192 | .driver = { |
193 | .owner = THIS_MODULE, | |
4f2ab888 | 194 | .name = "cp210x", |
18fcac35 | 195 | }, |
1da177e4 | 196 | .id_table = id_table, |
1da177e4 | 197 | .num_ports = 1, |
aea006b9 | 198 | .bulk_in_size = 256, |
d4e598f6 | 199 | .bulk_out_size = 256, |
4cc27bd6 CS |
200 | .open = cp210x_open, |
201 | .close = cp210x_close, | |
202 | .break_ctl = cp210x_break_ctl, | |
203 | .set_termios = cp210x_set_termios, | |
4f2ab888 | 204 | .tiocmget = cp210x_tiocmget, |
4cc27bd6 CS |
205 | .tiocmset = cp210x_tiocmset, |
206 | .attach = cp210x_startup, | |
a5360a53 | 207 | .release = cp210x_release, |
d14fc1a7 | 208 | .dtr_rts = cp210x_dtr_rts |
1da177e4 LT |
209 | }; |
210 | ||
08a4f6bc AS |
211 | static struct usb_serial_driver * const serial_drivers[] = { |
212 | &cp210x_device, NULL | |
213 | }; | |
214 | ||
39a66b8d | 215 | /* Config request types */ |
32445605 PF |
216 | #define REQTYPE_HOST_TO_INTERFACE 0x41 |
217 | #define REQTYPE_INTERFACE_TO_HOST 0xc1 | |
218 | #define REQTYPE_HOST_TO_DEVICE 0x40 | |
219 | #define REQTYPE_DEVICE_TO_HOST 0xc0 | |
1da177e4 | 220 | |
93ef1f1f CS |
221 | /* Config request codes */ |
222 | #define CP210X_IFC_ENABLE 0x00 | |
223 | #define CP210X_SET_BAUDDIV 0x01 | |
224 | #define CP210X_GET_BAUDDIV 0x02 | |
225 | #define CP210X_SET_LINE_CTL 0x03 | |
226 | #define CP210X_GET_LINE_CTL 0x04 | |
227 | #define CP210X_SET_BREAK 0x05 | |
228 | #define CP210X_IMM_CHAR 0x06 | |
229 | #define CP210X_SET_MHS 0x07 | |
230 | #define CP210X_GET_MDMSTS 0x08 | |
231 | #define CP210X_SET_XON 0x09 | |
232 | #define CP210X_SET_XOFF 0x0A | |
233 | #define CP210X_SET_EVENTMASK 0x0B | |
234 | #define CP210X_GET_EVENTMASK 0x0C | |
235 | #define CP210X_SET_CHAR 0x0D | |
236 | #define CP210X_GET_CHARS 0x0E | |
237 | #define CP210X_GET_PROPS 0x0F | |
238 | #define CP210X_GET_COMM_STATUS 0x10 | |
239 | #define CP210X_RESET 0x11 | |
240 | #define CP210X_PURGE 0x12 | |
241 | #define CP210X_SET_FLOW 0x13 | |
242 | #define CP210X_GET_FLOW 0x14 | |
243 | #define CP210X_EMBED_EVENTS 0x15 | |
244 | #define CP210X_GET_EVENTSTATE 0x16 | |
245 | #define CP210X_SET_CHARS 0x19 | |
7f482fc8 PF |
246 | #define CP210X_GET_BAUDRATE 0x1D |
247 | #define CP210X_SET_BAUDRATE 0x1E | |
93ef1f1f CS |
248 | |
249 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
250 | #define UART_ENABLE 0x0001 |
251 | #define UART_DISABLE 0x0000 | |
252 | ||
93ef1f1f | 253 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
254 | #define BAUD_RATE_GEN_FREQ 0x384000 |
255 | ||
93ef1f1f | 256 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 257 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 258 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
259 | #define BITS_DATA_6 0X0600 |
260 | #define BITS_DATA_7 0X0700 | |
261 | #define BITS_DATA_8 0X0800 | |
262 | #define BITS_DATA_9 0X0900 | |
263 | ||
264 | #define BITS_PARITY_MASK 0x00f0 | |
265 | #define BITS_PARITY_NONE 0x0000 | |
266 | #define BITS_PARITY_ODD 0x0010 | |
267 | #define BITS_PARITY_EVEN 0x0020 | |
268 | #define BITS_PARITY_MARK 0x0030 | |
269 | #define BITS_PARITY_SPACE 0x0040 | |
270 | ||
271 | #define BITS_STOP_MASK 0x000f | |
272 | #define BITS_STOP_1 0x0000 | |
273 | #define BITS_STOP_1_5 0x0001 | |
274 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 275 | |
93ef1f1f | 276 | /* CP210X_SET_BREAK */ |
72916791 CS |
277 | #define BREAK_ON 0x0001 |
278 | #define BREAK_OFF 0x0000 | |
1da177e4 | 279 | |
93ef1f1f | 280 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
281 | #define CONTROL_DTR 0x0001 |
282 | #define CONTROL_RTS 0x0002 | |
283 | #define CONTROL_CTS 0x0010 | |
284 | #define CONTROL_DSR 0x0020 | |
285 | #define CONTROL_RING 0x0040 | |
286 | #define CONTROL_DCD 0x0080 | |
287 | #define CONTROL_WRITE_DTR 0x0100 | |
288 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 289 | |
39a66b8d | 290 | /* |
4cc27bd6 CS |
291 | * cp210x_get_config |
292 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
293 | * 'size' is specified in bytes. |
294 | * 'data' is a pointer to a pre-allocated array of integers large | |
295 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
296 | */ | |
4cc27bd6 | 297 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 298 | unsigned int *data, int size) |
1da177e4 LT |
299 | { |
300 | struct usb_serial *serial = port->serial; | |
4295fe77 | 301 | struct cp210x_serial_private *spriv = usb_get_serial_data(serial); |
53ebb3b8 | 302 | __le32 *buf; |
39a66b8d CS |
303 | int result, i, length; |
304 | ||
305 | /* Number of integers required to contain the array */ | |
4f2ab888 | 306 | length = (((size - 1) | 3) + 1) / 4; |
39a66b8d | 307 | |
53ebb3b8 | 308 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
10c642d0 | 309 | if (!buf) |
39a66b8d | 310 | return -ENOMEM; |
1da177e4 | 311 | |
39a66b8d | 312 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 313 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
32445605 | 314 | request, REQTYPE_INTERFACE_TO_HOST, 0x0000, |
4295fe77 | 315 | spriv->bInterfaceNumber, buf, size, |
2d5733fc | 316 | USB_CTRL_GET_TIMEOUT); |
1da177e4 | 317 | |
39a66b8d | 318 | /* Convert data into an array of integers */ |
ff7eb602 | 319 | for (i = 0; i < length; i++) |
39a66b8d | 320 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 321 | |
39a66b8d | 322 | kfree(buf); |
1da177e4 | 323 | |
39a66b8d | 324 | if (result != size) { |
660f3b14 GKH |
325 | dev_dbg(&port->dev, "%s - Unable to send config request, request=0x%x size=%d result=%d\n", |
326 | __func__, request, size, result); | |
2479e2a9 JH |
327 | if (result > 0) |
328 | result = -EPROTO; | |
329 | ||
330 | return result; | |
39a66b8d | 331 | } |
1da177e4 | 332 | |
39a66b8d | 333 | return 0; |
1da177e4 LT |
334 | } |
335 | ||
39a66b8d | 336 | /* |
4cc27bd6 CS |
337 | * cp210x_set_config |
338 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
339 | * Values less than 16 bits wide are sent directly |
340 | * 'size' is specified in bytes. | |
341 | */ | |
4cc27bd6 | 342 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 343 | unsigned int *data, int size) |
1da177e4 LT |
344 | { |
345 | struct usb_serial *serial = port->serial; | |
4295fe77 | 346 | struct cp210x_serial_private *spriv = usb_get_serial_data(serial); |
53ebb3b8 | 347 | __le32 *buf; |
39a66b8d | 348 | int result, i, length; |
1da177e4 | 349 | |
39a66b8d | 350 | /* Number of integers required to contain the array */ |
4f2ab888 | 351 | length = (((size - 1) | 3) + 1) / 4; |
39a66b8d | 352 | |
53ebb3b8 | 353 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
10c642d0 | 354 | if (!buf) |
39a66b8d | 355 | return -ENOMEM; |
39a66b8d CS |
356 | |
357 | /* Array of integers into bytes */ | |
358 | for (i = 0; i < length; i++) | |
359 | buf[i] = cpu_to_le32(data[i]); | |
360 | ||
361 | if (size > 2) { | |
ff7eb602 | 362 | result = usb_control_msg(serial->dev, |
39a66b8d | 363 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 364 | request, REQTYPE_HOST_TO_INTERFACE, 0x0000, |
4295fe77 | 365 | spriv->bInterfaceNumber, buf, size, |
2d5733fc | 366 | USB_CTRL_SET_TIMEOUT); |
39a66b8d | 367 | } else { |
ff7eb602 | 368 | result = usb_control_msg(serial->dev, |
39a66b8d | 369 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 370 | request, REQTYPE_HOST_TO_INTERFACE, data[0], |
4295fe77 | 371 | spriv->bInterfaceNumber, NULL, 0, |
2d5733fc | 372 | USB_CTRL_SET_TIMEOUT); |
1da177e4 LT |
373 | } |
374 | ||
39a66b8d CS |
375 | kfree(buf); |
376 | ||
377 | if ((size > 2 && result != size) || result < 0) { | |
660f3b14 GKH |
378 | dev_dbg(&port->dev, "%s - Unable to send request, request=0x%x size=%d result=%d\n", |
379 | __func__, request, size, result); | |
2479e2a9 JH |
380 | if (result > 0) |
381 | result = -EPROTO; | |
382 | ||
383 | return result; | |
39a66b8d | 384 | } |
1da177e4 LT |
385 | |
386 | return 0; | |
387 | } | |
388 | ||
39a66b8d | 389 | /* |
4cc27bd6 CS |
390 | * cp210x_set_config_single |
391 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
392 | * without requiring an integer pointer |
393 | */ | |
4cc27bd6 | 394 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
395 | u8 request, unsigned int data) |
396 | { | |
4cc27bd6 | 397 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
398 | } |
399 | ||
ef8b6bcb | 400 | /* |
4cc27bd6 | 401 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
402 | * Quantises the baud rate as per AN205 Table 1 |
403 | */ | |
4f2ab888 JH |
404 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) |
405 | { | |
be125d9c JH |
406 | if (baud <= 300) |
407 | baud = 300; | |
ef8b6bcb CS |
408 | else if (baud <= 600) baud = 600; |
409 | else if (baud <= 1200) baud = 1200; | |
410 | else if (baud <= 1800) baud = 1800; | |
411 | else if (baud <= 2400) baud = 2400; | |
412 | else if (baud <= 4000) baud = 4000; | |
413 | else if (baud <= 4803) baud = 4800; | |
414 | else if (baud <= 7207) baud = 7200; | |
415 | else if (baud <= 9612) baud = 9600; | |
416 | else if (baud <= 14428) baud = 14400; | |
417 | else if (baud <= 16062) baud = 16000; | |
418 | else if (baud <= 19250) baud = 19200; | |
419 | else if (baud <= 28912) baud = 28800; | |
420 | else if (baud <= 38601) baud = 38400; | |
421 | else if (baud <= 51558) baud = 51200; | |
422 | else if (baud <= 56280) baud = 56000; | |
423 | else if (baud <= 58053) baud = 57600; | |
424 | else if (baud <= 64111) baud = 64000; | |
425 | else if (baud <= 77608) baud = 76800; | |
426 | else if (baud <= 117028) baud = 115200; | |
427 | else if (baud <= 129347) baud = 128000; | |
428 | else if (baud <= 156868) baud = 153600; | |
429 | else if (baud <= 237832) baud = 230400; | |
430 | else if (baud <= 254234) baud = 250000; | |
431 | else if (baud <= 273066) baud = 256000; | |
432 | else if (baud <= 491520) baud = 460800; | |
433 | else if (baud <= 567138) baud = 500000; | |
434 | else if (baud <= 670254) baud = 576000; | |
d1620ca9 JH |
435 | else if (baud < 1000000) |
436 | baud = 921600; | |
437 | else if (baud > 2000000) | |
438 | baud = 2000000; | |
ef8b6bcb CS |
439 | return baud; |
440 | } | |
441 | ||
a509a7e4 | 442 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 443 | { |
1da177e4 LT |
444 | int result; |
445 | ||
2479e2a9 JH |
446 | result = cp210x_set_config_single(port, CP210X_IFC_ENABLE, |
447 | UART_ENABLE); | |
448 | if (result) { | |
449 | dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); | |
450 | return result; | |
1da177e4 LT |
451 | } |
452 | ||
39a66b8d | 453 | /* Configure the termios structure */ |
4cc27bd6 | 454 | cp210x_get_termios(tty, port); |
55b2afbb | 455 | |
cdc32fd6 JH |
456 | /* The baud rate must be initialised on cp2104 */ |
457 | if (tty) | |
458 | cp210x_change_speed(tty, port, NULL); | |
459 | ||
55b2afbb | 460 | return usb_serial_generic_open(tty, port); |
1da177e4 LT |
461 | } |
462 | ||
4cc27bd6 | 463 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 464 | { |
f26788da | 465 | usb_serial_generic_close(port); |
ecb9eb80 | 466 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
1da177e4 LT |
467 | } |
468 | ||
39a66b8d | 469 | /* |
4cc27bd6 | 470 | * cp210x_get_termios |
39a66b8d CS |
471 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
472 | * from the device, corrects any unsupported values, and configures the | |
473 | * termios structure to reflect the state of the device | |
474 | */ | |
4cc27bd6 | 475 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
476 | struct usb_serial_port *port) |
477 | { | |
478 | unsigned int baud; | |
479 | ||
480 | if (tty) { | |
4cc27bd6 | 481 | cp210x_get_termios_port(tty->driver_data, |
adc8d746 | 482 | &tty->termios.c_cflag, &baud); |
d2ad67b3 | 483 | tty_encode_baud_rate(tty, baud, baud); |
4f2ab888 | 484 | } else { |
d2ad67b3 V |
485 | unsigned int cflag; |
486 | cflag = 0; | |
4cc27bd6 | 487 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
488 | } |
489 | } | |
490 | ||
491 | /* | |
4cc27bd6 CS |
492 | * cp210x_get_termios_port |
493 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 494 | */ |
4cc27bd6 | 495 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 496 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 497 | { |
660f3b14 | 498 | struct device *dev = &port->dev; |
39a66b8d | 499 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
500 | unsigned int baud; |
501 | unsigned int bits; | |
1da177e4 | 502 | |
7f482fc8 | 503 | cp210x_get_config(port, CP210X_GET_BAUDRATE, &baud, 4); |
1da177e4 | 504 | |
660f3b14 | 505 | dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); |
d2ad67b3 | 506 | *baudp = baud; |
9ab0f202 | 507 | |
d2ad67b3 | 508 | cflag = *cflagp; |
1da177e4 | 509 | |
4cc27bd6 | 510 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 | 511 | cflag &= ~CSIZE; |
ff7eb602 AC |
512 | switch (bits & BITS_DATA_MASK) { |
513 | case BITS_DATA_5: | |
660f3b14 | 514 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
ff7eb602 AC |
515 | cflag |= CS5; |
516 | break; | |
517 | case BITS_DATA_6: | |
660f3b14 | 518 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
ff7eb602 AC |
519 | cflag |= CS6; |
520 | break; | |
521 | case BITS_DATA_7: | |
660f3b14 | 522 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
ff7eb602 AC |
523 | cflag |= CS7; |
524 | break; | |
525 | case BITS_DATA_8: | |
660f3b14 | 526 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
ff7eb602 AC |
527 | cflag |= CS8; |
528 | break; | |
529 | case BITS_DATA_9: | |
660f3b14 | 530 | dev_dbg(dev, "%s - data bits = 9 (not supported, using 8 data bits)\n", __func__); |
ff7eb602 AC |
531 | cflag |= CS8; |
532 | bits &= ~BITS_DATA_MASK; | |
533 | bits |= BITS_DATA_8; | |
4cc27bd6 | 534 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
535 | break; |
536 | default: | |
660f3b14 | 537 | dev_dbg(dev, "%s - Unknown number of data bits, using 8\n", __func__); |
ff7eb602 AC |
538 | cflag |= CS8; |
539 | bits &= ~BITS_DATA_MASK; | |
540 | bits |= BITS_DATA_8; | |
4cc27bd6 | 541 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 542 | break; |
1da177e4 LT |
543 | } |
544 | ||
ff7eb602 AC |
545 | switch (bits & BITS_PARITY_MASK) { |
546 | case BITS_PARITY_NONE: | |
660f3b14 | 547 | dev_dbg(dev, "%s - parity = NONE\n", __func__); |
ff7eb602 AC |
548 | cflag &= ~PARENB; |
549 | break; | |
550 | case BITS_PARITY_ODD: | |
660f3b14 | 551 | dev_dbg(dev, "%s - parity = ODD\n", __func__); |
ff7eb602 AC |
552 | cflag |= (PARENB|PARODD); |
553 | break; | |
554 | case BITS_PARITY_EVEN: | |
660f3b14 | 555 | dev_dbg(dev, "%s - parity = EVEN\n", __func__); |
ff7eb602 AC |
556 | cflag &= ~PARODD; |
557 | cflag |= PARENB; | |
558 | break; | |
559 | case BITS_PARITY_MARK: | |
660f3b14 | 560 | dev_dbg(dev, "%s - parity = MARK\n", __func__); |
4b6181ca | 561 | cflag |= (PARENB|PARODD|CMSPAR); |
ff7eb602 AC |
562 | break; |
563 | case BITS_PARITY_SPACE: | |
660f3b14 | 564 | dev_dbg(dev, "%s - parity = SPACE\n", __func__); |
4b6181ca RK |
565 | cflag &= ~PARODD; |
566 | cflag |= (PARENB|CMSPAR); | |
ff7eb602 AC |
567 | break; |
568 | default: | |
660f3b14 | 569 | dev_dbg(dev, "%s - Unknown parity mode, disabling parity\n", __func__); |
ff7eb602 AC |
570 | cflag &= ~PARENB; |
571 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 572 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 573 | break; |
1da177e4 LT |
574 | } |
575 | ||
576 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
577 | switch (bits & BITS_STOP_MASK) { |
578 | case BITS_STOP_1: | |
660f3b14 | 579 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
ff7eb602 AC |
580 | break; |
581 | case BITS_STOP_1_5: | |
660f3b14 | 582 | dev_dbg(dev, "%s - stop bits = 1.5 (not supported, using 1 stop bit)\n", __func__); |
ff7eb602 | 583 | bits &= ~BITS_STOP_MASK; |
4cc27bd6 | 584 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
585 | break; |
586 | case BITS_STOP_2: | |
660f3b14 | 587 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
ff7eb602 AC |
588 | cflag |= CSTOPB; |
589 | break; | |
590 | default: | |
660f3b14 | 591 | dev_dbg(dev, "%s - Unknown number of stop bits, using 1 stop bit\n", __func__); |
ff7eb602 | 592 | bits &= ~BITS_STOP_MASK; |
4cc27bd6 | 593 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 594 | break; |
1da177e4 LT |
595 | } |
596 | ||
4cc27bd6 | 597 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 598 | if (modem_ctl[0] & 0x0008) { |
660f3b14 | 599 | dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); |
39a66b8d CS |
600 | cflag |= CRTSCTS; |
601 | } else { | |
660f3b14 | 602 | dev_dbg(dev, "%s - flow control = NONE\n", __func__); |
39a66b8d CS |
603 | cflag &= ~CRTSCTS; |
604 | } | |
605 | ||
d2ad67b3 | 606 | *cflagp = cflag; |
1da177e4 LT |
607 | } |
608 | ||
e5990874 JH |
609 | /* |
610 | * CP2101 supports the following baud rates: | |
611 | * | |
612 | * 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800, | |
613 | * 38400, 56000, 57600, 115200, 128000, 230400, 460800, 921600 | |
614 | * | |
615 | * CP2102 and CP2103 support the following additional rates: | |
616 | * | |
617 | * 4000, 16000, 51200, 64000, 76800, 153600, 250000, 256000, 500000, | |
618 | * 576000 | |
619 | * | |
620 | * The device will map a requested rate to a supported one, but the result | |
621 | * of requests for rates greater than 1053257 is undefined (see AN205). | |
622 | * | |
623 | * CP2104, CP2105 and CP2110 support most rates up to 2M, 921k and 1M baud, | |
624 | * respectively, with an error less than 1%. The actual rates are determined | |
625 | * by | |
626 | * | |
627 | * div = round(freq / (2 x prescale x request)) | |
628 | * actual = freq / (2 x prescale x div) | |
629 | * | |
630 | * For CP2104 and CP2105 freq is 48Mhz and prescale is 4 for request <= 365bps | |
631 | * or 1 otherwise. | |
632 | * For CP2110 freq is 24Mhz and prescale is 4 for request <= 300bps or 1 | |
633 | * otherwise. | |
634 | */ | |
635 | static void cp210x_change_speed(struct tty_struct *tty, | |
636 | struct usb_serial_port *port, struct ktermios *old_termios) | |
637 | { | |
638 | u32 baud; | |
639 | ||
adc8d746 | 640 | baud = tty->termios.c_ospeed; |
e5990874 | 641 | |
d1620ca9 JH |
642 | /* This maps the requested rate to a rate valid on cp2102 or cp2103, |
643 | * or to an arbitrary rate in [1M,2M]. | |
e5990874 JH |
644 | * |
645 | * NOTE: B0 is not implemented. | |
646 | */ | |
647 | baud = cp210x_quantise_baudrate(baud); | |
648 | ||
660f3b14 | 649 | dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud); |
e5990874 JH |
650 | if (cp210x_set_config(port, CP210X_SET_BAUDRATE, &baud, |
651 | sizeof(baud))) { | |
652 | dev_warn(&port->dev, "failed to set baud rate to %u\n", baud); | |
653 | if (old_termios) | |
654 | baud = old_termios->c_ospeed; | |
655 | else | |
656 | baud = 9600; | |
657 | } | |
658 | ||
659 | tty_encode_baud_rate(tty, baud, baud); | |
660 | } | |
661 | ||
4cc27bd6 | 662 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 663 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 664 | { |
660f3b14 | 665 | struct device *dev = &port->dev; |
9ab0f202 | 666 | unsigned int cflag, old_cflag; |
34b76fca | 667 | unsigned int bits; |
39a66b8d | 668 | unsigned int modem_ctl[4]; |
1da177e4 | 669 | |
adc8d746 | 670 | cflag = tty->termios.c_cflag; |
01e96d28 | 671 | old_cflag = old_termios->c_cflag; |
e5990874 | 672 | |
adc8d746 | 673 | if (tty->termios.c_ospeed != old_termios->c_ospeed) |
e5990874 | 674 | cp210x_change_speed(tty, port, old_termios); |
1da177e4 | 675 | |
39a66b8d | 676 | /* If the number of data bits is to be updated */ |
1da177e4 | 677 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 678 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
679 | bits &= ~BITS_DATA_MASK; |
680 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
681 | case CS5: |
682 | bits |= BITS_DATA_5; | |
660f3b14 | 683 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
ff7eb602 AC |
684 | break; |
685 | case CS6: | |
686 | bits |= BITS_DATA_6; | |
660f3b14 | 687 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
ff7eb602 AC |
688 | break; |
689 | case CS7: | |
690 | bits |= BITS_DATA_7; | |
660f3b14 | 691 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
ff7eb602 AC |
692 | break; |
693 | case CS8: | |
694 | bits |= BITS_DATA_8; | |
660f3b14 | 695 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
ff7eb602 AC |
696 | break; |
697 | /*case CS9: | |
698 | bits |= BITS_DATA_9; | |
660f3b14 | 699 | dev_dbg(dev, "%s - data bits = 9\n", __func__); |
ff7eb602 AC |
700 | break;*/ |
701 | default: | |
660f3b14 | 702 | dev_dbg(dev, "cp210x driver does not support the number of bits requested, using 8 bit mode\n"); |
4f2ab888 JH |
703 | bits |= BITS_DATA_8; |
704 | break; | |
1da177e4 | 705 | } |
4cc27bd6 | 706 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 707 | dev_dbg(dev, "Number of data bits requested not supported by device\n"); |
1da177e4 LT |
708 | } |
709 | ||
4b6181ca RK |
710 | if ((cflag & (PARENB|PARODD|CMSPAR)) != |
711 | (old_cflag & (PARENB|PARODD|CMSPAR))) { | |
4cc27bd6 | 712 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
713 | bits &= ~BITS_PARITY_MASK; |
714 | if (cflag & PARENB) { | |
4b6181ca | 715 | if (cflag & CMSPAR) { |
660f3b14 GKH |
716 | if (cflag & PARODD) { |
717 | bits |= BITS_PARITY_MARK; | |
718 | dev_dbg(dev, "%s - parity = MARK\n", __func__); | |
719 | } else { | |
720 | bits |= BITS_PARITY_SPACE; | |
721 | dev_dbg(dev, "%s - parity = SPACE\n", __func__); | |
722 | } | |
1da177e4 | 723 | } else { |
660f3b14 GKH |
724 | if (cflag & PARODD) { |
725 | bits |= BITS_PARITY_ODD; | |
726 | dev_dbg(dev, "%s - parity = ODD\n", __func__); | |
727 | } else { | |
728 | bits |= BITS_PARITY_EVEN; | |
729 | dev_dbg(dev, "%s - parity = EVEN\n", __func__); | |
730 | } | |
1da177e4 LT |
731 | } |
732 | } | |
4cc27bd6 | 733 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 734 | dev_dbg(dev, "Parity mode not supported by device\n"); |
1da177e4 LT |
735 | } |
736 | ||
737 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 738 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
739 | bits &= ~BITS_STOP_MASK; |
740 | if (cflag & CSTOPB) { | |
741 | bits |= BITS_STOP_2; | |
660f3b14 | 742 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
1da177e4 LT |
743 | } else { |
744 | bits |= BITS_STOP_1; | |
660f3b14 | 745 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
1da177e4 | 746 | } |
4cc27bd6 | 747 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 748 | dev_dbg(dev, "Number of stop bits requested not supported by device\n"); |
1da177e4 | 749 | } |
39a66b8d CS |
750 | |
751 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 752 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
660f3b14 GKH |
753 | dev_dbg(dev, "%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
754 | __func__, modem_ctl[0], modem_ctl[1], | |
755 | modem_ctl[2], modem_ctl[3]); | |
39a66b8d CS |
756 | |
757 | if (cflag & CRTSCTS) { | |
758 | modem_ctl[0] &= ~0x7B; | |
759 | modem_ctl[0] |= 0x09; | |
760 | modem_ctl[1] = 0x80; | |
660f3b14 | 761 | dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); |
39a66b8d CS |
762 | } else { |
763 | modem_ctl[0] &= ~0x7B; | |
764 | modem_ctl[0] |= 0x01; | |
765 | modem_ctl[1] |= 0x40; | |
660f3b14 | 766 | dev_dbg(dev, "%s - flow control = NONE\n", __func__); |
39a66b8d CS |
767 | } |
768 | ||
660f3b14 GKH |
769 | dev_dbg(dev, "%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
770 | __func__, modem_ctl[0], modem_ctl[1], | |
771 | modem_ctl[2], modem_ctl[3]); | |
4cc27bd6 | 772 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
773 | } |
774 | ||
775 | } | |
776 | ||
4f2ab888 | 777 | static int cp210x_tiocmset(struct tty_struct *tty, |
39a66b8d CS |
778 | unsigned int set, unsigned int clear) |
779 | { | |
95da310e | 780 | struct usb_serial_port *port = tty->driver_data; |
20b9d177 | 781 | return cp210x_tiocmset_port(port, set, clear); |
d2ad67b3 V |
782 | } |
783 | ||
20b9d177 | 784 | static int cp210x_tiocmset_port(struct usb_serial_port *port, |
d2ad67b3 V |
785 | unsigned int set, unsigned int clear) |
786 | { | |
b2bdd1f5 | 787 | unsigned int control = 0; |
39a66b8d | 788 | |
39a66b8d CS |
789 | if (set & TIOCM_RTS) { |
790 | control |= CONTROL_RTS; | |
791 | control |= CONTROL_WRITE_RTS; | |
792 | } | |
793 | if (set & TIOCM_DTR) { | |
794 | control |= CONTROL_DTR; | |
795 | control |= CONTROL_WRITE_DTR; | |
796 | } | |
797 | if (clear & TIOCM_RTS) { | |
798 | control &= ~CONTROL_RTS; | |
799 | control |= CONTROL_WRITE_RTS; | |
800 | } | |
801 | if (clear & TIOCM_DTR) { | |
802 | control &= ~CONTROL_DTR; | |
803 | control |= CONTROL_WRITE_DTR; | |
804 | } | |
805 | ||
660f3b14 | 806 | dev_dbg(&port->dev, "%s - control = 0x%.4x\n", __func__, control); |
39a66b8d | 807 | |
4cc27bd6 | 808 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
809 | } |
810 | ||
d94c7bd4 AC |
811 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
812 | { | |
813 | if (on) | |
20b9d177 | 814 | cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0); |
d94c7bd4 | 815 | else |
20b9d177 | 816 | cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS); |
d94c7bd4 AC |
817 | } |
818 | ||
4f2ab888 | 819 | static int cp210x_tiocmget(struct tty_struct *tty) |
39a66b8d | 820 | { |
95da310e | 821 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
822 | unsigned int control; |
823 | int result; | |
39a66b8d | 824 | |
4cc27bd6 | 825 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
826 | |
827 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
828 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
829 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
830 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
831 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
832 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
833 | ||
660f3b14 | 834 | dev_dbg(&port->dev, "%s - control = 0x%.2x\n", __func__, control); |
39a66b8d CS |
835 | |
836 | return result; | |
1da177e4 LT |
837 | } |
838 | ||
4f2ab888 | 839 | static void cp210x_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 840 | { |
95da310e | 841 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 842 | unsigned int state; |
1da177e4 | 843 | |
1da177e4 LT |
844 | if (break_state == 0) |
845 | state = BREAK_OFF; | |
846 | else | |
847 | state = BREAK_ON; | |
660f3b14 GKH |
848 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
849 | state == BREAK_OFF ? "off" : "on"); | |
4cc27bd6 | 850 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
851 | } |
852 | ||
4cc27bd6 | 853 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 854 | { |
4295fe77 JH |
855 | struct usb_host_interface *cur_altsetting; |
856 | struct cp210x_serial_private *spriv; | |
a5360a53 | 857 | |
4cc27bd6 | 858 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 | 859 | usb_reset_device(serial->dev); |
a5360a53 | 860 | |
4295fe77 JH |
861 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); |
862 | if (!spriv) | |
863 | return -ENOMEM; | |
a5360a53 | 864 | |
4295fe77 JH |
865 | cur_altsetting = serial->interface->cur_altsetting; |
866 | spriv->bInterfaceNumber = cur_altsetting->desc.bInterfaceNumber; | |
a5360a53 | 867 | |
4295fe77 | 868 | usb_set_serial_data(serial, spriv); |
a5360a53 | 869 | |
1da177e4 LT |
870 | return 0; |
871 | } | |
872 | ||
a5360a53 PF |
873 | static void cp210x_release(struct usb_serial *serial) |
874 | { | |
4295fe77 | 875 | struct cp210x_serial_private *spriv; |
a5360a53 | 876 | |
4295fe77 JH |
877 | spriv = usb_get_serial_data(serial); |
878 | kfree(spriv); | |
a5360a53 PF |
879 | } |
880 | ||
68e24113 | 881 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
882 | |
883 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 884 | MODULE_LICENSE("GPL"); |