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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 | 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 */ |
c851e83f | 107 | { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */ |
b7c7cbc8 | 108 | { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ |
ba0f332c | 109 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
8bf16ba7 | 110 | { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */ |
881e3c98 | 111 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
faea63f7 | 112 | { USB_DEVICE(0x10C4, 0x83D8) }, /* DekTec DTA Plus VHF/UHF Booster/Attenuator */ |
8bf16ba7 | 113 | { USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */ |
faea63f7 | 114 | { USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */ |
d23bac9f | 115 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
541e05ec | 116 | { USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */ |
4eff0b40 CS |
117 | { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */ |
118 | { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */ | |
356fe44f | 119 | { USB_DEVICE(0x10C4, 0x85F8) }, /* Virtenio Preon32 */ |
4eff0b40 CS |
120 | { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */ |
121 | { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */ | |
e988fc8a | 122 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 123 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
a5360a53 PF |
124 | { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */ |
125 | { USB_DEVICE(0x10C4, 0xEA80) }, /* Silicon Labs factory default */ | |
eefd9029 | 126 | { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */ |
5de8b3ac CS |
127 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
128 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
129 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
130 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 131 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 132 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 133 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 134 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
3fcc8f96 CS |
135 | { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */ |
136 | { USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */ | |
5de8b3ac | 137 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
3fcc8f96 CS |
138 | { USB_DEVICE(0x166A, 0x0304) }, /* Clipsal 5000CT2 C-Bus Black and White Touchscreen */ |
139 | { USB_DEVICE(0x166A, 0x0305) }, /* Clipsal C-5000CT2 C-Bus Spectrum Colour Touchscreen */ | |
140 | { USB_DEVICE(0x166A, 0x0401) }, /* Clipsal L51xx C-Bus Architectural Dimmer */ | |
141 | { USB_DEVICE(0x166A, 0x0101) }, /* Clipsal 5560884 C-Bus Multi-room Audio Matrix Switcher */ | |
b0ce84d5 | 142 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
356c5a48 AIB |
143 | { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */ |
144 | { USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */ | |
145 | { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */ | |
146 | { USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */ | |
c6c1e449 BT |
147 | { USB_DEVICE(0x17A8, 0x0001) }, /* Kamstrup Optical Eye/3-wire */ |
148 | { USB_DEVICE(0x17A8, 0x0005) }, /* Kamstrup M-Bus Master MultiPort 250D */ | |
541e05ec CS |
149 | { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ |
150 | { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ | |
151 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ | |
b579fa52 | 152 | { USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */ |
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 */ | |
be3101c2 MK |
156 | { USB_DEVICE(0x1FB9, 0x0100) }, /* Lake Shore Model 121 Current Source */ |
157 | { USB_DEVICE(0x1FB9, 0x0200) }, /* Lake Shore Model 218A Temperature Monitor */ | |
158 | { USB_DEVICE(0x1FB9, 0x0201) }, /* Lake Shore Model 219 Temperature Monitor */ | |
159 | { USB_DEVICE(0x1FB9, 0x0202) }, /* Lake Shore Model 233 Temperature Transmitter */ | |
160 | { USB_DEVICE(0x1FB9, 0x0203) }, /* Lake Shore Model 235 Temperature Transmitter */ | |
161 | { USB_DEVICE(0x1FB9, 0x0300) }, /* Lake Shore Model 335 Temperature Controller */ | |
162 | { USB_DEVICE(0x1FB9, 0x0301) }, /* Lake Shore Model 336 Temperature Controller */ | |
163 | { USB_DEVICE(0x1FB9, 0x0302) }, /* Lake Shore Model 350 Temperature Controller */ | |
164 | { USB_DEVICE(0x1FB9, 0x0303) }, /* Lake Shore Model 371 AC Bridge */ | |
165 | { USB_DEVICE(0x1FB9, 0x0400) }, /* Lake Shore Model 411 Handheld Gaussmeter */ | |
166 | { USB_DEVICE(0x1FB9, 0x0401) }, /* Lake Shore Model 425 Gaussmeter */ | |
167 | { USB_DEVICE(0x1FB9, 0x0402) }, /* Lake Shore Model 455A Gaussmeter */ | |
168 | { USB_DEVICE(0x1FB9, 0x0403) }, /* Lake Shore Model 475A Gaussmeter */ | |
169 | { USB_DEVICE(0x1FB9, 0x0404) }, /* Lake Shore Model 465 Three Axis Gaussmeter */ | |
170 | { USB_DEVICE(0x1FB9, 0x0600) }, /* Lake Shore Model 625A Superconducting MPS */ | |
171 | { USB_DEVICE(0x1FB9, 0x0601) }, /* Lake Shore Model 642A Magnet Power Supply */ | |
172 | { USB_DEVICE(0x1FB9, 0x0602) }, /* Lake Shore Model 648 Magnet Power Supply */ | |
173 | { USB_DEVICE(0x1FB9, 0x0700) }, /* Lake Shore Model 737 VSM Controller */ | |
174 | { USB_DEVICE(0x1FB9, 0x0701) }, /* Lake Shore Model 776 Hall Matrix */ | |
791b7d7c | 175 | { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */ |
3fcc8f96 CS |
176 | { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */ |
177 | { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */ | |
541e05ec | 178 | { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ |
39a66b8d | 179 | { } /* Terminating Entry */ |
1da177e4 LT |
180 | }; |
181 | ||
ff7eb602 | 182 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 183 | |
4295fe77 | 184 | struct cp210x_serial_private { |
a5360a53 PF |
185 | __u8 bInterfaceNumber; |
186 | }; | |
187 | ||
4cc27bd6 | 188 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
189 | .driver = { |
190 | .owner = THIS_MODULE, | |
4f2ab888 | 191 | .name = "cp210x", |
18fcac35 | 192 | }, |
1da177e4 | 193 | .id_table = id_table, |
1da177e4 | 194 | .num_ports = 1, |
aea006b9 | 195 | .bulk_in_size = 256, |
d4e598f6 | 196 | .bulk_out_size = 256, |
4cc27bd6 CS |
197 | .open = cp210x_open, |
198 | .close = cp210x_close, | |
199 | .break_ctl = cp210x_break_ctl, | |
200 | .set_termios = cp210x_set_termios, | |
4f2ab888 | 201 | .tiocmget = cp210x_tiocmget, |
4cc27bd6 CS |
202 | .tiocmset = cp210x_tiocmset, |
203 | .attach = cp210x_startup, | |
a5360a53 | 204 | .release = cp210x_release, |
d14fc1a7 | 205 | .dtr_rts = cp210x_dtr_rts |
1da177e4 LT |
206 | }; |
207 | ||
08a4f6bc AS |
208 | static struct usb_serial_driver * const serial_drivers[] = { |
209 | &cp210x_device, NULL | |
210 | }; | |
211 | ||
39a66b8d | 212 | /* Config request types */ |
32445605 PF |
213 | #define REQTYPE_HOST_TO_INTERFACE 0x41 |
214 | #define REQTYPE_INTERFACE_TO_HOST 0xc1 | |
215 | #define REQTYPE_HOST_TO_DEVICE 0x40 | |
216 | #define REQTYPE_DEVICE_TO_HOST 0xc0 | |
1da177e4 | 217 | |
93ef1f1f CS |
218 | /* Config request codes */ |
219 | #define CP210X_IFC_ENABLE 0x00 | |
220 | #define CP210X_SET_BAUDDIV 0x01 | |
221 | #define CP210X_GET_BAUDDIV 0x02 | |
222 | #define CP210X_SET_LINE_CTL 0x03 | |
223 | #define CP210X_GET_LINE_CTL 0x04 | |
224 | #define CP210X_SET_BREAK 0x05 | |
225 | #define CP210X_IMM_CHAR 0x06 | |
226 | #define CP210X_SET_MHS 0x07 | |
227 | #define CP210X_GET_MDMSTS 0x08 | |
228 | #define CP210X_SET_XON 0x09 | |
229 | #define CP210X_SET_XOFF 0x0A | |
230 | #define CP210X_SET_EVENTMASK 0x0B | |
231 | #define CP210X_GET_EVENTMASK 0x0C | |
232 | #define CP210X_SET_CHAR 0x0D | |
233 | #define CP210X_GET_CHARS 0x0E | |
234 | #define CP210X_GET_PROPS 0x0F | |
235 | #define CP210X_GET_COMM_STATUS 0x10 | |
236 | #define CP210X_RESET 0x11 | |
237 | #define CP210X_PURGE 0x12 | |
238 | #define CP210X_SET_FLOW 0x13 | |
239 | #define CP210X_GET_FLOW 0x14 | |
240 | #define CP210X_EMBED_EVENTS 0x15 | |
241 | #define CP210X_GET_EVENTSTATE 0x16 | |
242 | #define CP210X_SET_CHARS 0x19 | |
7f482fc8 PF |
243 | #define CP210X_GET_BAUDRATE 0x1D |
244 | #define CP210X_SET_BAUDRATE 0x1E | |
93ef1f1f CS |
245 | |
246 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
247 | #define UART_ENABLE 0x0001 |
248 | #define UART_DISABLE 0x0000 | |
249 | ||
93ef1f1f | 250 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
251 | #define BAUD_RATE_GEN_FREQ 0x384000 |
252 | ||
93ef1f1f | 253 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 254 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 255 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
256 | #define BITS_DATA_6 0X0600 |
257 | #define BITS_DATA_7 0X0700 | |
258 | #define BITS_DATA_8 0X0800 | |
259 | #define BITS_DATA_9 0X0900 | |
260 | ||
261 | #define BITS_PARITY_MASK 0x00f0 | |
262 | #define BITS_PARITY_NONE 0x0000 | |
263 | #define BITS_PARITY_ODD 0x0010 | |
264 | #define BITS_PARITY_EVEN 0x0020 | |
265 | #define BITS_PARITY_MARK 0x0030 | |
266 | #define BITS_PARITY_SPACE 0x0040 | |
267 | ||
268 | #define BITS_STOP_MASK 0x000f | |
269 | #define BITS_STOP_1 0x0000 | |
270 | #define BITS_STOP_1_5 0x0001 | |
271 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 272 | |
93ef1f1f | 273 | /* CP210X_SET_BREAK */ |
72916791 CS |
274 | #define BREAK_ON 0x0001 |
275 | #define BREAK_OFF 0x0000 | |
1da177e4 | 276 | |
93ef1f1f | 277 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
278 | #define CONTROL_DTR 0x0001 |
279 | #define CONTROL_RTS 0x0002 | |
280 | #define CONTROL_CTS 0x0010 | |
281 | #define CONTROL_DSR 0x0020 | |
282 | #define CONTROL_RING 0x0040 | |
283 | #define CONTROL_DCD 0x0080 | |
284 | #define CONTROL_WRITE_DTR 0x0100 | |
285 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 286 | |
39a66b8d | 287 | /* |
4cc27bd6 CS |
288 | * cp210x_get_config |
289 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
290 | * 'size' is specified in bytes. |
291 | * 'data' is a pointer to a pre-allocated array of integers large | |
292 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
293 | */ | |
4cc27bd6 | 294 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 295 | unsigned int *data, int size) |
1da177e4 LT |
296 | { |
297 | struct usb_serial *serial = port->serial; | |
4295fe77 | 298 | struct cp210x_serial_private *spriv = usb_get_serial_data(serial); |
53ebb3b8 | 299 | __le32 *buf; |
39a66b8d CS |
300 | int result, i, length; |
301 | ||
302 | /* Number of integers required to contain the array */ | |
4f2ab888 | 303 | length = (((size - 1) | 3) + 1) / 4; |
39a66b8d | 304 | |
53ebb3b8 | 305 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 306 | if (!buf) { |
441b62c1 | 307 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
308 | return -ENOMEM; |
309 | } | |
1da177e4 | 310 | |
39a66b8d | 311 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 312 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
32445605 | 313 | request, REQTYPE_INTERFACE_TO_HOST, 0x0000, |
4295fe77 | 314 | spriv->bInterfaceNumber, buf, size, |
2d5733fc | 315 | USB_CTRL_GET_TIMEOUT); |
1da177e4 | 316 | |
39a66b8d | 317 | /* Convert data into an array of integers */ |
ff7eb602 | 318 | for (i = 0; i < length; i++) |
39a66b8d | 319 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 320 | |
39a66b8d | 321 | kfree(buf); |
1da177e4 | 322 | |
39a66b8d | 323 | if (result != size) { |
660f3b14 GKH |
324 | dev_dbg(&port->dev, "%s - Unable to send config request, request=0x%x size=%d result=%d\n", |
325 | __func__, request, size, result); | |
2479e2a9 JH |
326 | if (result > 0) |
327 | result = -EPROTO; | |
328 | ||
329 | return result; | |
39a66b8d | 330 | } |
1da177e4 | 331 | |
39a66b8d | 332 | return 0; |
1da177e4 LT |
333 | } |
334 | ||
39a66b8d | 335 | /* |
4cc27bd6 CS |
336 | * cp210x_set_config |
337 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
338 | * Values less than 16 bits wide are sent directly |
339 | * 'size' is specified in bytes. | |
340 | */ | |
4cc27bd6 | 341 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 342 | unsigned int *data, int size) |
1da177e4 LT |
343 | { |
344 | struct usb_serial *serial = port->serial; | |
4295fe77 | 345 | struct cp210x_serial_private *spriv = usb_get_serial_data(serial); |
53ebb3b8 | 346 | __le32 *buf; |
39a66b8d | 347 | int result, i, length; |
1da177e4 | 348 | |
39a66b8d | 349 | /* Number of integers required to contain the array */ |
4f2ab888 | 350 | length = (((size - 1) | 3) + 1) / 4; |
39a66b8d | 351 | |
53ebb3b8 | 352 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d | 353 | if (!buf) { |
4f2ab888 | 354 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
355 | return -ENOMEM; |
356 | } | |
357 | ||
358 | /* Array of integers into bytes */ | |
359 | for (i = 0; i < length; i++) | |
360 | buf[i] = cpu_to_le32(data[i]); | |
361 | ||
362 | if (size > 2) { | |
ff7eb602 | 363 | result = usb_control_msg(serial->dev, |
39a66b8d | 364 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 365 | request, REQTYPE_HOST_TO_INTERFACE, 0x0000, |
4295fe77 | 366 | spriv->bInterfaceNumber, buf, size, |
2d5733fc | 367 | USB_CTRL_SET_TIMEOUT); |
39a66b8d | 368 | } else { |
ff7eb602 | 369 | result = usb_control_msg(serial->dev, |
39a66b8d | 370 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 371 | request, REQTYPE_HOST_TO_INTERFACE, data[0], |
4295fe77 | 372 | spriv->bInterfaceNumber, NULL, 0, |
2d5733fc | 373 | USB_CTRL_SET_TIMEOUT); |
1da177e4 LT |
374 | } |
375 | ||
39a66b8d CS |
376 | kfree(buf); |
377 | ||
378 | if ((size > 2 && result != size) || result < 0) { | |
660f3b14 GKH |
379 | dev_dbg(&port->dev, "%s - Unable to send request, request=0x%x size=%d result=%d\n", |
380 | __func__, request, size, result); | |
2479e2a9 JH |
381 | if (result > 0) |
382 | result = -EPROTO; | |
383 | ||
384 | return result; | |
39a66b8d | 385 | } |
1da177e4 LT |
386 | |
387 | return 0; | |
388 | } | |
389 | ||
39a66b8d | 390 | /* |
4cc27bd6 CS |
391 | * cp210x_set_config_single |
392 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
393 | * without requiring an integer pointer |
394 | */ | |
4cc27bd6 | 395 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
396 | u8 request, unsigned int data) |
397 | { | |
4cc27bd6 | 398 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
399 | } |
400 | ||
ef8b6bcb | 401 | /* |
4cc27bd6 | 402 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
403 | * Quantises the baud rate as per AN205 Table 1 |
404 | */ | |
4f2ab888 JH |
405 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) |
406 | { | |
be125d9c JH |
407 | if (baud <= 300) |
408 | baud = 300; | |
ef8b6bcb CS |
409 | else if (baud <= 600) baud = 600; |
410 | else if (baud <= 1200) baud = 1200; | |
411 | else if (baud <= 1800) baud = 1800; | |
412 | else if (baud <= 2400) baud = 2400; | |
413 | else if (baud <= 4000) baud = 4000; | |
414 | else if (baud <= 4803) baud = 4800; | |
415 | else if (baud <= 7207) baud = 7200; | |
416 | else if (baud <= 9612) baud = 9600; | |
417 | else if (baud <= 14428) baud = 14400; | |
418 | else if (baud <= 16062) baud = 16000; | |
419 | else if (baud <= 19250) baud = 19200; | |
420 | else if (baud <= 28912) baud = 28800; | |
421 | else if (baud <= 38601) baud = 38400; | |
422 | else if (baud <= 51558) baud = 51200; | |
423 | else if (baud <= 56280) baud = 56000; | |
424 | else if (baud <= 58053) baud = 57600; | |
425 | else if (baud <= 64111) baud = 64000; | |
426 | else if (baud <= 77608) baud = 76800; | |
427 | else if (baud <= 117028) baud = 115200; | |
428 | else if (baud <= 129347) baud = 128000; | |
429 | else if (baud <= 156868) baud = 153600; | |
430 | else if (baud <= 237832) baud = 230400; | |
431 | else if (baud <= 254234) baud = 250000; | |
432 | else if (baud <= 273066) baud = 256000; | |
433 | else if (baud <= 491520) baud = 460800; | |
434 | else if (baud <= 567138) baud = 500000; | |
435 | else if (baud <= 670254) baud = 576000; | |
d1620ca9 JH |
436 | else if (baud < 1000000) |
437 | baud = 921600; | |
438 | else if (baud > 2000000) | |
439 | baud = 2000000; | |
ef8b6bcb CS |
440 | return baud; |
441 | } | |
442 | ||
a509a7e4 | 443 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 444 | { |
1da177e4 LT |
445 | int result; |
446 | ||
2479e2a9 JH |
447 | result = cp210x_set_config_single(port, CP210X_IFC_ENABLE, |
448 | UART_ENABLE); | |
449 | if (result) { | |
450 | dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); | |
451 | return result; | |
1da177e4 LT |
452 | } |
453 | ||
39a66b8d | 454 | /* Configure the termios structure */ |
4cc27bd6 | 455 | cp210x_get_termios(tty, port); |
55b2afbb | 456 | |
cdc32fd6 JH |
457 | /* The baud rate must be initialised on cp2104 */ |
458 | if (tty) | |
459 | cp210x_change_speed(tty, port, NULL); | |
460 | ||
55b2afbb | 461 | return usb_serial_generic_open(tty, port); |
1da177e4 LT |
462 | } |
463 | ||
4cc27bd6 | 464 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 465 | { |
f26788da | 466 | usb_serial_generic_close(port); |
ecb9eb80 | 467 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
1da177e4 LT |
468 | } |
469 | ||
39a66b8d | 470 | /* |
4cc27bd6 | 471 | * cp210x_get_termios |
39a66b8d CS |
472 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
473 | * from the device, corrects any unsupported values, and configures the | |
474 | * termios structure to reflect the state of the device | |
475 | */ | |
4cc27bd6 | 476 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
477 | struct usb_serial_port *port) |
478 | { | |
479 | unsigned int baud; | |
480 | ||
481 | if (tty) { | |
4cc27bd6 | 482 | cp210x_get_termios_port(tty->driver_data, |
adc8d746 | 483 | &tty->termios.c_cflag, &baud); |
d2ad67b3 | 484 | tty_encode_baud_rate(tty, baud, baud); |
4f2ab888 | 485 | } else { |
d2ad67b3 V |
486 | unsigned int cflag; |
487 | cflag = 0; | |
4cc27bd6 | 488 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
489 | } |
490 | } | |
491 | ||
492 | /* | |
4cc27bd6 CS |
493 | * cp210x_get_termios_port |
494 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 495 | */ |
4cc27bd6 | 496 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 497 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 498 | { |
660f3b14 | 499 | struct device *dev = &port->dev; |
39a66b8d | 500 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
501 | unsigned int baud; |
502 | unsigned int bits; | |
1da177e4 | 503 | |
7f482fc8 | 504 | cp210x_get_config(port, CP210X_GET_BAUDRATE, &baud, 4); |
1da177e4 | 505 | |
660f3b14 | 506 | dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); |
d2ad67b3 | 507 | *baudp = baud; |
9ab0f202 | 508 | |
d2ad67b3 | 509 | cflag = *cflagp; |
1da177e4 | 510 | |
4cc27bd6 | 511 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 | 512 | cflag &= ~CSIZE; |
ff7eb602 AC |
513 | switch (bits & BITS_DATA_MASK) { |
514 | case BITS_DATA_5: | |
660f3b14 | 515 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
ff7eb602 AC |
516 | cflag |= CS5; |
517 | break; | |
518 | case BITS_DATA_6: | |
660f3b14 | 519 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
ff7eb602 AC |
520 | cflag |= CS6; |
521 | break; | |
522 | case BITS_DATA_7: | |
660f3b14 | 523 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
ff7eb602 AC |
524 | cflag |= CS7; |
525 | break; | |
526 | case BITS_DATA_8: | |
660f3b14 | 527 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
ff7eb602 AC |
528 | cflag |= CS8; |
529 | break; | |
530 | case BITS_DATA_9: | |
660f3b14 | 531 | dev_dbg(dev, "%s - data bits = 9 (not supported, using 8 data bits)\n", __func__); |
ff7eb602 AC |
532 | cflag |= CS8; |
533 | bits &= ~BITS_DATA_MASK; | |
534 | bits |= BITS_DATA_8; | |
4cc27bd6 | 535 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
536 | break; |
537 | default: | |
660f3b14 | 538 | dev_dbg(dev, "%s - Unknown number of data bits, using 8\n", __func__); |
ff7eb602 AC |
539 | cflag |= CS8; |
540 | bits &= ~BITS_DATA_MASK; | |
541 | bits |= BITS_DATA_8; | |
4cc27bd6 | 542 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 543 | break; |
1da177e4 LT |
544 | } |
545 | ||
ff7eb602 AC |
546 | switch (bits & BITS_PARITY_MASK) { |
547 | case BITS_PARITY_NONE: | |
660f3b14 | 548 | dev_dbg(dev, "%s - parity = NONE\n", __func__); |
ff7eb602 AC |
549 | cflag &= ~PARENB; |
550 | break; | |
551 | case BITS_PARITY_ODD: | |
660f3b14 | 552 | dev_dbg(dev, "%s - parity = ODD\n", __func__); |
ff7eb602 AC |
553 | cflag |= (PARENB|PARODD); |
554 | break; | |
555 | case BITS_PARITY_EVEN: | |
660f3b14 | 556 | dev_dbg(dev, "%s - parity = EVEN\n", __func__); |
ff7eb602 AC |
557 | cflag &= ~PARODD; |
558 | cflag |= PARENB; | |
559 | break; | |
560 | case BITS_PARITY_MARK: | |
660f3b14 | 561 | dev_dbg(dev, "%s - parity = MARK\n", __func__); |
4b6181ca | 562 | cflag |= (PARENB|PARODD|CMSPAR); |
ff7eb602 AC |
563 | break; |
564 | case BITS_PARITY_SPACE: | |
660f3b14 | 565 | dev_dbg(dev, "%s - parity = SPACE\n", __func__); |
4b6181ca RK |
566 | cflag &= ~PARODD; |
567 | cflag |= (PARENB|CMSPAR); | |
ff7eb602 AC |
568 | break; |
569 | default: | |
660f3b14 | 570 | dev_dbg(dev, "%s - Unknown parity mode, disabling parity\n", __func__); |
ff7eb602 AC |
571 | cflag &= ~PARENB; |
572 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 573 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 574 | break; |
1da177e4 LT |
575 | } |
576 | ||
577 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
578 | switch (bits & BITS_STOP_MASK) { |
579 | case BITS_STOP_1: | |
660f3b14 | 580 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
ff7eb602 AC |
581 | break; |
582 | case BITS_STOP_1_5: | |
660f3b14 | 583 | dev_dbg(dev, "%s - stop bits = 1.5 (not supported, using 1 stop bit)\n", __func__); |
ff7eb602 | 584 | bits &= ~BITS_STOP_MASK; |
4cc27bd6 | 585 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
586 | break; |
587 | case BITS_STOP_2: | |
660f3b14 | 588 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
ff7eb602 AC |
589 | cflag |= CSTOPB; |
590 | break; | |
591 | default: | |
660f3b14 | 592 | dev_dbg(dev, "%s - Unknown number of stop bits, using 1 stop bit\n", __func__); |
ff7eb602 | 593 | bits &= ~BITS_STOP_MASK; |
4cc27bd6 | 594 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 595 | break; |
1da177e4 LT |
596 | } |
597 | ||
4cc27bd6 | 598 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 599 | if (modem_ctl[0] & 0x0008) { |
660f3b14 | 600 | dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); |
39a66b8d CS |
601 | cflag |= CRTSCTS; |
602 | } else { | |
660f3b14 | 603 | dev_dbg(dev, "%s - flow control = NONE\n", __func__); |
39a66b8d CS |
604 | cflag &= ~CRTSCTS; |
605 | } | |
606 | ||
d2ad67b3 | 607 | *cflagp = cflag; |
1da177e4 LT |
608 | } |
609 | ||
e5990874 JH |
610 | /* |
611 | * CP2101 supports the following baud rates: | |
612 | * | |
613 | * 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800, | |
614 | * 38400, 56000, 57600, 115200, 128000, 230400, 460800, 921600 | |
615 | * | |
616 | * CP2102 and CP2103 support the following additional rates: | |
617 | * | |
618 | * 4000, 16000, 51200, 64000, 76800, 153600, 250000, 256000, 500000, | |
619 | * 576000 | |
620 | * | |
621 | * The device will map a requested rate to a supported one, but the result | |
622 | * of requests for rates greater than 1053257 is undefined (see AN205). | |
623 | * | |
624 | * CP2104, CP2105 and CP2110 support most rates up to 2M, 921k and 1M baud, | |
625 | * respectively, with an error less than 1%. The actual rates are determined | |
626 | * by | |
627 | * | |
628 | * div = round(freq / (2 x prescale x request)) | |
629 | * actual = freq / (2 x prescale x div) | |
630 | * | |
631 | * For CP2104 and CP2105 freq is 48Mhz and prescale is 4 for request <= 365bps | |
632 | * or 1 otherwise. | |
633 | * For CP2110 freq is 24Mhz and prescale is 4 for request <= 300bps or 1 | |
634 | * otherwise. | |
635 | */ | |
636 | static void cp210x_change_speed(struct tty_struct *tty, | |
637 | struct usb_serial_port *port, struct ktermios *old_termios) | |
638 | { | |
639 | u32 baud; | |
640 | ||
adc8d746 | 641 | baud = tty->termios.c_ospeed; |
e5990874 | 642 | |
d1620ca9 JH |
643 | /* This maps the requested rate to a rate valid on cp2102 or cp2103, |
644 | * or to an arbitrary rate in [1M,2M]. | |
e5990874 JH |
645 | * |
646 | * NOTE: B0 is not implemented. | |
647 | */ | |
648 | baud = cp210x_quantise_baudrate(baud); | |
649 | ||
660f3b14 | 650 | dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud); |
e5990874 JH |
651 | if (cp210x_set_config(port, CP210X_SET_BAUDRATE, &baud, |
652 | sizeof(baud))) { | |
653 | dev_warn(&port->dev, "failed to set baud rate to %u\n", baud); | |
654 | if (old_termios) | |
655 | baud = old_termios->c_ospeed; | |
656 | else | |
657 | baud = 9600; | |
658 | } | |
659 | ||
660 | tty_encode_baud_rate(tty, baud, baud); | |
661 | } | |
662 | ||
4cc27bd6 | 663 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 664 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 665 | { |
660f3b14 | 666 | struct device *dev = &port->dev; |
9ab0f202 | 667 | unsigned int cflag, old_cflag; |
34b76fca | 668 | unsigned int bits; |
39a66b8d | 669 | unsigned int modem_ctl[4]; |
1da177e4 | 670 | |
95da310e | 671 | if (!tty) |
1da177e4 | 672 | return; |
9ab0f202 | 673 | |
adc8d746 | 674 | cflag = tty->termios.c_cflag; |
01e96d28 | 675 | old_cflag = old_termios->c_cflag; |
e5990874 | 676 | |
adc8d746 | 677 | if (tty->termios.c_ospeed != old_termios->c_ospeed) |
e5990874 | 678 | cp210x_change_speed(tty, port, old_termios); |
1da177e4 | 679 | |
39a66b8d | 680 | /* If the number of data bits is to be updated */ |
1da177e4 | 681 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 682 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
683 | bits &= ~BITS_DATA_MASK; |
684 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
685 | case CS5: |
686 | bits |= BITS_DATA_5; | |
660f3b14 | 687 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
ff7eb602 AC |
688 | break; |
689 | case CS6: | |
690 | bits |= BITS_DATA_6; | |
660f3b14 | 691 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
ff7eb602 AC |
692 | break; |
693 | case CS7: | |
694 | bits |= BITS_DATA_7; | |
660f3b14 | 695 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
ff7eb602 AC |
696 | break; |
697 | case CS8: | |
698 | bits |= BITS_DATA_8; | |
660f3b14 | 699 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
ff7eb602 AC |
700 | break; |
701 | /*case CS9: | |
702 | bits |= BITS_DATA_9; | |
660f3b14 | 703 | dev_dbg(dev, "%s - data bits = 9\n", __func__); |
ff7eb602 AC |
704 | break;*/ |
705 | default: | |
660f3b14 | 706 | dev_dbg(dev, "cp210x driver does not support the number of bits requested, using 8 bit mode\n"); |
4f2ab888 JH |
707 | bits |= BITS_DATA_8; |
708 | break; | |
1da177e4 | 709 | } |
4cc27bd6 | 710 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 711 | dev_dbg(dev, "Number of data bits requested not supported by device\n"); |
1da177e4 LT |
712 | } |
713 | ||
4b6181ca RK |
714 | if ((cflag & (PARENB|PARODD|CMSPAR)) != |
715 | (old_cflag & (PARENB|PARODD|CMSPAR))) { | |
4cc27bd6 | 716 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
717 | bits &= ~BITS_PARITY_MASK; |
718 | if (cflag & PARENB) { | |
4b6181ca | 719 | if (cflag & CMSPAR) { |
660f3b14 GKH |
720 | if (cflag & PARODD) { |
721 | bits |= BITS_PARITY_MARK; | |
722 | dev_dbg(dev, "%s - parity = MARK\n", __func__); | |
723 | } else { | |
724 | bits |= BITS_PARITY_SPACE; | |
725 | dev_dbg(dev, "%s - parity = SPACE\n", __func__); | |
726 | } | |
1da177e4 | 727 | } else { |
660f3b14 GKH |
728 | if (cflag & PARODD) { |
729 | bits |= BITS_PARITY_ODD; | |
730 | dev_dbg(dev, "%s - parity = ODD\n", __func__); | |
731 | } else { | |
732 | bits |= BITS_PARITY_EVEN; | |
733 | dev_dbg(dev, "%s - parity = EVEN\n", __func__); | |
734 | } | |
1da177e4 LT |
735 | } |
736 | } | |
4cc27bd6 | 737 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 738 | dev_dbg(dev, "Parity mode not supported by device\n"); |
1da177e4 LT |
739 | } |
740 | ||
741 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 742 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
743 | bits &= ~BITS_STOP_MASK; |
744 | if (cflag & CSTOPB) { | |
745 | bits |= BITS_STOP_2; | |
660f3b14 | 746 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
1da177e4 LT |
747 | } else { |
748 | bits |= BITS_STOP_1; | |
660f3b14 | 749 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
1da177e4 | 750 | } |
4cc27bd6 | 751 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 752 | dev_dbg(dev, "Number of stop bits requested not supported by device\n"); |
1da177e4 | 753 | } |
39a66b8d CS |
754 | |
755 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 756 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
660f3b14 GKH |
757 | dev_dbg(dev, "%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
758 | __func__, modem_ctl[0], modem_ctl[1], | |
759 | modem_ctl[2], modem_ctl[3]); | |
39a66b8d CS |
760 | |
761 | if (cflag & CRTSCTS) { | |
762 | modem_ctl[0] &= ~0x7B; | |
763 | modem_ctl[0] |= 0x09; | |
764 | modem_ctl[1] = 0x80; | |
660f3b14 | 765 | dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); |
39a66b8d CS |
766 | } else { |
767 | modem_ctl[0] &= ~0x7B; | |
768 | modem_ctl[0] |= 0x01; | |
769 | modem_ctl[1] |= 0x40; | |
660f3b14 | 770 | dev_dbg(dev, "%s - flow control = NONE\n", __func__); |
39a66b8d CS |
771 | } |
772 | ||
660f3b14 GKH |
773 | dev_dbg(dev, "%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
774 | __func__, modem_ctl[0], modem_ctl[1], | |
775 | modem_ctl[2], modem_ctl[3]); | |
4cc27bd6 | 776 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
777 | } |
778 | ||
779 | } | |
780 | ||
4f2ab888 | 781 | static int cp210x_tiocmset(struct tty_struct *tty, |
39a66b8d CS |
782 | unsigned int set, unsigned int clear) |
783 | { | |
95da310e | 784 | struct usb_serial_port *port = tty->driver_data; |
20b9d177 | 785 | return cp210x_tiocmset_port(port, set, clear); |
d2ad67b3 V |
786 | } |
787 | ||
20b9d177 | 788 | static int cp210x_tiocmset_port(struct usb_serial_port *port, |
d2ad67b3 V |
789 | unsigned int set, unsigned int clear) |
790 | { | |
b2bdd1f5 | 791 | unsigned int control = 0; |
39a66b8d | 792 | |
39a66b8d CS |
793 | if (set & TIOCM_RTS) { |
794 | control |= CONTROL_RTS; | |
795 | control |= CONTROL_WRITE_RTS; | |
796 | } | |
797 | if (set & TIOCM_DTR) { | |
798 | control |= CONTROL_DTR; | |
799 | control |= CONTROL_WRITE_DTR; | |
800 | } | |
801 | if (clear & TIOCM_RTS) { | |
802 | control &= ~CONTROL_RTS; | |
803 | control |= CONTROL_WRITE_RTS; | |
804 | } | |
805 | if (clear & TIOCM_DTR) { | |
806 | control &= ~CONTROL_DTR; | |
807 | control |= CONTROL_WRITE_DTR; | |
808 | } | |
809 | ||
660f3b14 | 810 | dev_dbg(&port->dev, "%s - control = 0x%.4x\n", __func__, control); |
39a66b8d | 811 | |
4cc27bd6 | 812 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
813 | } |
814 | ||
d94c7bd4 AC |
815 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
816 | { | |
817 | if (on) | |
20b9d177 | 818 | cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0); |
d94c7bd4 | 819 | else |
20b9d177 | 820 | cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS); |
d94c7bd4 AC |
821 | } |
822 | ||
4f2ab888 | 823 | static int cp210x_tiocmget(struct tty_struct *tty) |
39a66b8d | 824 | { |
95da310e | 825 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
826 | unsigned int control; |
827 | int result; | |
39a66b8d | 828 | |
4cc27bd6 | 829 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
830 | |
831 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
832 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
833 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
834 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
835 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
836 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
837 | ||
660f3b14 | 838 | dev_dbg(&port->dev, "%s - control = 0x%.2x\n", __func__, control); |
39a66b8d CS |
839 | |
840 | return result; | |
1da177e4 LT |
841 | } |
842 | ||
4f2ab888 | 843 | static void cp210x_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 844 | { |
95da310e | 845 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 846 | unsigned int state; |
1da177e4 | 847 | |
1da177e4 LT |
848 | if (break_state == 0) |
849 | state = BREAK_OFF; | |
850 | else | |
851 | state = BREAK_ON; | |
660f3b14 GKH |
852 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
853 | state == BREAK_OFF ? "off" : "on"); | |
4cc27bd6 | 854 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
855 | } |
856 | ||
4cc27bd6 | 857 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 858 | { |
4295fe77 JH |
859 | struct usb_host_interface *cur_altsetting; |
860 | struct cp210x_serial_private *spriv; | |
a5360a53 | 861 | |
4cc27bd6 | 862 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 | 863 | usb_reset_device(serial->dev); |
a5360a53 | 864 | |
4295fe77 JH |
865 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); |
866 | if (!spriv) | |
867 | return -ENOMEM; | |
a5360a53 | 868 | |
4295fe77 JH |
869 | cur_altsetting = serial->interface->cur_altsetting; |
870 | spriv->bInterfaceNumber = cur_altsetting->desc.bInterfaceNumber; | |
a5360a53 | 871 | |
4295fe77 | 872 | usb_set_serial_data(serial, spriv); |
a5360a53 | 873 | |
1da177e4 LT |
874 | return 0; |
875 | } | |
876 | ||
a5360a53 PF |
877 | static void cp210x_release(struct usb_serial *serial) |
878 | { | |
4295fe77 | 879 | struct cp210x_serial_private *spriv; |
a5360a53 | 880 | |
4295fe77 JH |
881 | spriv = usb_get_serial_data(serial); |
882 | kfree(spriv); | |
a5360a53 PF |
883 | } |
884 | ||
68e24113 | 885 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
886 | |
887 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 888 | MODULE_LICENSE("GPL"); |