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 */ |
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 */ | |
76811569 SR |
122 | { USB_DEVICE(0x10C4, 0x88A4) }, /* MMB Networks ZigBee USB Device */ |
123 | { USB_DEVICE(0x10C4, 0x88A5) }, /* Planet Innovation Ingeni ZigBee USB Device */ | |
e988fc8a | 124 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 125 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
a5360a53 PF |
126 | { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */ |
127 | { USB_DEVICE(0x10C4, 0xEA80) }, /* Silicon Labs factory default */ | |
eefd9029 | 128 | { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */ |
5de8b3ac CS |
129 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
130 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
131 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
132 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 133 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 134 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 135 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 136 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
3fcc8f96 CS |
137 | { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */ |
138 | { USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */ | |
5de8b3ac | 139 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
3fcc8f96 CS |
140 | { USB_DEVICE(0x166A, 0x0304) }, /* Clipsal 5000CT2 C-Bus Black and White Touchscreen */ |
141 | { USB_DEVICE(0x166A, 0x0305) }, /* Clipsal C-5000CT2 C-Bus Spectrum Colour Touchscreen */ | |
142 | { USB_DEVICE(0x166A, 0x0401) }, /* Clipsal L51xx C-Bus Architectural Dimmer */ | |
143 | { USB_DEVICE(0x166A, 0x0101) }, /* Clipsal 5560884 C-Bus Multi-room Audio Matrix Switcher */ | |
b0ce84d5 | 144 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
356c5a48 AIB |
145 | { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */ |
146 | { USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */ | |
147 | { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */ | |
148 | { USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */ | |
c6c1e449 BT |
149 | { USB_DEVICE(0x17A8, 0x0001) }, /* Kamstrup Optical Eye/3-wire */ |
150 | { USB_DEVICE(0x17A8, 0x0005) }, /* Kamstrup M-Bus Master MultiPort 250D */ | |
541e05ec CS |
151 | { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ |
152 | { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ | |
153 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ | |
b579fa52 | 154 | { USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */ |
93ad03d6 | 155 | { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */ |
3fcc8f96 CS |
156 | { USB_DEVICE(0x1E29, 0x0102) }, /* Festo CPX-USB */ |
157 | { USB_DEVICE(0x1E29, 0x0501) }, /* Festo CMSP */ | |
be3101c2 MK |
158 | { USB_DEVICE(0x1FB9, 0x0100) }, /* Lake Shore Model 121 Current Source */ |
159 | { USB_DEVICE(0x1FB9, 0x0200) }, /* Lake Shore Model 218A Temperature Monitor */ | |
160 | { USB_DEVICE(0x1FB9, 0x0201) }, /* Lake Shore Model 219 Temperature Monitor */ | |
161 | { USB_DEVICE(0x1FB9, 0x0202) }, /* Lake Shore Model 233 Temperature Transmitter */ | |
162 | { USB_DEVICE(0x1FB9, 0x0203) }, /* Lake Shore Model 235 Temperature Transmitter */ | |
163 | { USB_DEVICE(0x1FB9, 0x0300) }, /* Lake Shore Model 335 Temperature Controller */ | |
164 | { USB_DEVICE(0x1FB9, 0x0301) }, /* Lake Shore Model 336 Temperature Controller */ | |
165 | { USB_DEVICE(0x1FB9, 0x0302) }, /* Lake Shore Model 350 Temperature Controller */ | |
166 | { USB_DEVICE(0x1FB9, 0x0303) }, /* Lake Shore Model 371 AC Bridge */ | |
167 | { USB_DEVICE(0x1FB9, 0x0400) }, /* Lake Shore Model 411 Handheld Gaussmeter */ | |
168 | { USB_DEVICE(0x1FB9, 0x0401) }, /* Lake Shore Model 425 Gaussmeter */ | |
169 | { USB_DEVICE(0x1FB9, 0x0402) }, /* Lake Shore Model 455A Gaussmeter */ | |
170 | { USB_DEVICE(0x1FB9, 0x0403) }, /* Lake Shore Model 475A Gaussmeter */ | |
171 | { USB_DEVICE(0x1FB9, 0x0404) }, /* Lake Shore Model 465 Three Axis Gaussmeter */ | |
172 | { USB_DEVICE(0x1FB9, 0x0600) }, /* Lake Shore Model 625A Superconducting MPS */ | |
173 | { USB_DEVICE(0x1FB9, 0x0601) }, /* Lake Shore Model 642A Magnet Power Supply */ | |
174 | { USB_DEVICE(0x1FB9, 0x0602) }, /* Lake Shore Model 648 Magnet Power Supply */ | |
175 | { USB_DEVICE(0x1FB9, 0x0700) }, /* Lake Shore Model 737 VSM Controller */ | |
176 | { USB_DEVICE(0x1FB9, 0x0701) }, /* Lake Shore Model 776 Hall Matrix */ | |
791b7d7c | 177 | { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */ |
3fcc8f96 CS |
178 | { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */ |
179 | { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */ | |
541e05ec | 180 | { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ |
39a66b8d | 181 | { } /* Terminating Entry */ |
1da177e4 LT |
182 | }; |
183 | ||
ff7eb602 | 184 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 185 | |
4295fe77 | 186 | struct cp210x_serial_private { |
a5360a53 PF |
187 | __u8 bInterfaceNumber; |
188 | }; | |
189 | ||
4cc27bd6 | 190 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
191 | .driver = { |
192 | .owner = THIS_MODULE, | |
4f2ab888 | 193 | .name = "cp210x", |
18fcac35 | 194 | }, |
1da177e4 | 195 | .id_table = id_table, |
1da177e4 | 196 | .num_ports = 1, |
aea006b9 | 197 | .bulk_in_size = 256, |
d4e598f6 | 198 | .bulk_out_size = 256, |
4cc27bd6 CS |
199 | .open = cp210x_open, |
200 | .close = cp210x_close, | |
201 | .break_ctl = cp210x_break_ctl, | |
202 | .set_termios = cp210x_set_termios, | |
4f2ab888 | 203 | .tiocmget = cp210x_tiocmget, |
4cc27bd6 CS |
204 | .tiocmset = cp210x_tiocmset, |
205 | .attach = cp210x_startup, | |
a5360a53 | 206 | .release = cp210x_release, |
d14fc1a7 | 207 | .dtr_rts = cp210x_dtr_rts |
1da177e4 LT |
208 | }; |
209 | ||
08a4f6bc AS |
210 | static struct usb_serial_driver * const serial_drivers[] = { |
211 | &cp210x_device, NULL | |
212 | }; | |
213 | ||
39a66b8d | 214 | /* Config request types */ |
32445605 PF |
215 | #define REQTYPE_HOST_TO_INTERFACE 0x41 |
216 | #define REQTYPE_INTERFACE_TO_HOST 0xc1 | |
217 | #define REQTYPE_HOST_TO_DEVICE 0x40 | |
218 | #define REQTYPE_DEVICE_TO_HOST 0xc0 | |
1da177e4 | 219 | |
93ef1f1f CS |
220 | /* Config request codes */ |
221 | #define CP210X_IFC_ENABLE 0x00 | |
222 | #define CP210X_SET_BAUDDIV 0x01 | |
223 | #define CP210X_GET_BAUDDIV 0x02 | |
224 | #define CP210X_SET_LINE_CTL 0x03 | |
225 | #define CP210X_GET_LINE_CTL 0x04 | |
226 | #define CP210X_SET_BREAK 0x05 | |
227 | #define CP210X_IMM_CHAR 0x06 | |
228 | #define CP210X_SET_MHS 0x07 | |
229 | #define CP210X_GET_MDMSTS 0x08 | |
230 | #define CP210X_SET_XON 0x09 | |
231 | #define CP210X_SET_XOFF 0x0A | |
232 | #define CP210X_SET_EVENTMASK 0x0B | |
233 | #define CP210X_GET_EVENTMASK 0x0C | |
234 | #define CP210X_SET_CHAR 0x0D | |
235 | #define CP210X_GET_CHARS 0x0E | |
236 | #define CP210X_GET_PROPS 0x0F | |
237 | #define CP210X_GET_COMM_STATUS 0x10 | |
238 | #define CP210X_RESET 0x11 | |
239 | #define CP210X_PURGE 0x12 | |
240 | #define CP210X_SET_FLOW 0x13 | |
241 | #define CP210X_GET_FLOW 0x14 | |
242 | #define CP210X_EMBED_EVENTS 0x15 | |
243 | #define CP210X_GET_EVENTSTATE 0x16 | |
244 | #define CP210X_SET_CHARS 0x19 | |
7f482fc8 PF |
245 | #define CP210X_GET_BAUDRATE 0x1D |
246 | #define CP210X_SET_BAUDRATE 0x1E | |
93ef1f1f CS |
247 | |
248 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
249 | #define UART_ENABLE 0x0001 |
250 | #define UART_DISABLE 0x0000 | |
251 | ||
93ef1f1f | 252 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
253 | #define BAUD_RATE_GEN_FREQ 0x384000 |
254 | ||
93ef1f1f | 255 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 256 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 257 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
258 | #define BITS_DATA_6 0X0600 |
259 | #define BITS_DATA_7 0X0700 | |
260 | #define BITS_DATA_8 0X0800 | |
261 | #define BITS_DATA_9 0X0900 | |
262 | ||
263 | #define BITS_PARITY_MASK 0x00f0 | |
264 | #define BITS_PARITY_NONE 0x0000 | |
265 | #define BITS_PARITY_ODD 0x0010 | |
266 | #define BITS_PARITY_EVEN 0x0020 | |
267 | #define BITS_PARITY_MARK 0x0030 | |
268 | #define BITS_PARITY_SPACE 0x0040 | |
269 | ||
270 | #define BITS_STOP_MASK 0x000f | |
271 | #define BITS_STOP_1 0x0000 | |
272 | #define BITS_STOP_1_5 0x0001 | |
273 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 274 | |
93ef1f1f | 275 | /* CP210X_SET_BREAK */ |
72916791 CS |
276 | #define BREAK_ON 0x0001 |
277 | #define BREAK_OFF 0x0000 | |
1da177e4 | 278 | |
93ef1f1f | 279 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
280 | #define CONTROL_DTR 0x0001 |
281 | #define CONTROL_RTS 0x0002 | |
282 | #define CONTROL_CTS 0x0010 | |
283 | #define CONTROL_DSR 0x0020 | |
284 | #define CONTROL_RING 0x0040 | |
285 | #define CONTROL_DCD 0x0080 | |
286 | #define CONTROL_WRITE_DTR 0x0100 | |
287 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 288 | |
39a66b8d | 289 | /* |
4cc27bd6 CS |
290 | * cp210x_get_config |
291 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
292 | * 'size' is specified in bytes. |
293 | * 'data' is a pointer to a pre-allocated array of integers large | |
294 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
295 | */ | |
4cc27bd6 | 296 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 297 | unsigned int *data, int size) |
1da177e4 LT |
298 | { |
299 | struct usb_serial *serial = port->serial; | |
4295fe77 | 300 | struct cp210x_serial_private *spriv = usb_get_serial_data(serial); |
53ebb3b8 | 301 | __le32 *buf; |
39a66b8d CS |
302 | int result, i, length; |
303 | ||
304 | /* Number of integers required to contain the array */ | |
4f2ab888 | 305 | length = (((size - 1) | 3) + 1) / 4; |
39a66b8d | 306 | |
53ebb3b8 | 307 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 308 | if (!buf) { |
441b62c1 | 309 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
310 | return -ENOMEM; |
311 | } | |
1da177e4 | 312 | |
39a66b8d | 313 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 314 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
32445605 | 315 | request, REQTYPE_INTERFACE_TO_HOST, 0x0000, |
4295fe77 | 316 | spriv->bInterfaceNumber, buf, size, |
2d5733fc | 317 | USB_CTRL_GET_TIMEOUT); |
1da177e4 | 318 | |
39a66b8d | 319 | /* Convert data into an array of integers */ |
ff7eb602 | 320 | for (i = 0; i < length; i++) |
39a66b8d | 321 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 322 | |
39a66b8d | 323 | kfree(buf); |
1da177e4 | 324 | |
39a66b8d | 325 | if (result != size) { |
660f3b14 GKH |
326 | dev_dbg(&port->dev, "%s - Unable to send config request, request=0x%x size=%d result=%d\n", |
327 | __func__, request, size, result); | |
2479e2a9 JH |
328 | if (result > 0) |
329 | result = -EPROTO; | |
330 | ||
331 | return result; | |
39a66b8d | 332 | } |
1da177e4 | 333 | |
39a66b8d | 334 | return 0; |
1da177e4 LT |
335 | } |
336 | ||
39a66b8d | 337 | /* |
4cc27bd6 CS |
338 | * cp210x_set_config |
339 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
340 | * Values less than 16 bits wide are sent directly |
341 | * 'size' is specified in bytes. | |
342 | */ | |
4cc27bd6 | 343 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 344 | unsigned int *data, int size) |
1da177e4 LT |
345 | { |
346 | struct usb_serial *serial = port->serial; | |
4295fe77 | 347 | struct cp210x_serial_private *spriv = usb_get_serial_data(serial); |
53ebb3b8 | 348 | __le32 *buf; |
39a66b8d | 349 | int result, i, length; |
1da177e4 | 350 | |
39a66b8d | 351 | /* Number of integers required to contain the array */ |
4f2ab888 | 352 | length = (((size - 1) | 3) + 1) / 4; |
39a66b8d | 353 | |
53ebb3b8 | 354 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d | 355 | if (!buf) { |
4f2ab888 | 356 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
357 | return -ENOMEM; |
358 | } | |
359 | ||
360 | /* Array of integers into bytes */ | |
361 | for (i = 0; i < length; i++) | |
362 | buf[i] = cpu_to_le32(data[i]); | |
363 | ||
364 | if (size > 2) { | |
ff7eb602 | 365 | result = usb_control_msg(serial->dev, |
39a66b8d | 366 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 367 | request, REQTYPE_HOST_TO_INTERFACE, 0x0000, |
4295fe77 | 368 | spriv->bInterfaceNumber, buf, size, |
2d5733fc | 369 | USB_CTRL_SET_TIMEOUT); |
39a66b8d | 370 | } else { |
ff7eb602 | 371 | result = usb_control_msg(serial->dev, |
39a66b8d | 372 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 373 | request, REQTYPE_HOST_TO_INTERFACE, data[0], |
4295fe77 | 374 | spriv->bInterfaceNumber, NULL, 0, |
2d5733fc | 375 | USB_CTRL_SET_TIMEOUT); |
1da177e4 LT |
376 | } |
377 | ||
39a66b8d CS |
378 | kfree(buf); |
379 | ||
380 | if ((size > 2 && result != size) || result < 0) { | |
660f3b14 GKH |
381 | dev_dbg(&port->dev, "%s - Unable to send request, request=0x%x size=%d result=%d\n", |
382 | __func__, request, size, result); | |
2479e2a9 JH |
383 | if (result > 0) |
384 | result = -EPROTO; | |
385 | ||
386 | return result; | |
39a66b8d | 387 | } |
1da177e4 LT |
388 | |
389 | return 0; | |
390 | } | |
391 | ||
39a66b8d | 392 | /* |
4cc27bd6 CS |
393 | * cp210x_set_config_single |
394 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
395 | * without requiring an integer pointer |
396 | */ | |
4cc27bd6 | 397 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
398 | u8 request, unsigned int data) |
399 | { | |
4cc27bd6 | 400 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
401 | } |
402 | ||
ef8b6bcb | 403 | /* |
4cc27bd6 | 404 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
405 | * Quantises the baud rate as per AN205 Table 1 |
406 | */ | |
4f2ab888 JH |
407 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) |
408 | { | |
be125d9c JH |
409 | if (baud <= 300) |
410 | baud = 300; | |
ef8b6bcb CS |
411 | else if (baud <= 600) baud = 600; |
412 | else if (baud <= 1200) baud = 1200; | |
413 | else if (baud <= 1800) baud = 1800; | |
414 | else if (baud <= 2400) baud = 2400; | |
415 | else if (baud <= 4000) baud = 4000; | |
416 | else if (baud <= 4803) baud = 4800; | |
417 | else if (baud <= 7207) baud = 7200; | |
418 | else if (baud <= 9612) baud = 9600; | |
419 | else if (baud <= 14428) baud = 14400; | |
420 | else if (baud <= 16062) baud = 16000; | |
421 | else if (baud <= 19250) baud = 19200; | |
422 | else if (baud <= 28912) baud = 28800; | |
423 | else if (baud <= 38601) baud = 38400; | |
424 | else if (baud <= 51558) baud = 51200; | |
425 | else if (baud <= 56280) baud = 56000; | |
426 | else if (baud <= 58053) baud = 57600; | |
427 | else if (baud <= 64111) baud = 64000; | |
428 | else if (baud <= 77608) baud = 76800; | |
429 | else if (baud <= 117028) baud = 115200; | |
430 | else if (baud <= 129347) baud = 128000; | |
431 | else if (baud <= 156868) baud = 153600; | |
432 | else if (baud <= 237832) baud = 230400; | |
433 | else if (baud <= 254234) baud = 250000; | |
434 | else if (baud <= 273066) baud = 256000; | |
435 | else if (baud <= 491520) baud = 460800; | |
436 | else if (baud <= 567138) baud = 500000; | |
437 | else if (baud <= 670254) baud = 576000; | |
d1620ca9 JH |
438 | else if (baud < 1000000) |
439 | baud = 921600; | |
440 | else if (baud > 2000000) | |
441 | baud = 2000000; | |
ef8b6bcb CS |
442 | return baud; |
443 | } | |
444 | ||
a509a7e4 | 445 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 446 | { |
1da177e4 LT |
447 | int result; |
448 | ||
2479e2a9 JH |
449 | result = cp210x_set_config_single(port, CP210X_IFC_ENABLE, |
450 | UART_ENABLE); | |
451 | if (result) { | |
452 | dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); | |
453 | return result; | |
1da177e4 LT |
454 | } |
455 | ||
39a66b8d | 456 | /* Configure the termios structure */ |
4cc27bd6 | 457 | cp210x_get_termios(tty, port); |
55b2afbb | 458 | |
cdc32fd6 JH |
459 | /* The baud rate must be initialised on cp2104 */ |
460 | if (tty) | |
461 | cp210x_change_speed(tty, port, NULL); | |
462 | ||
55b2afbb | 463 | return usb_serial_generic_open(tty, port); |
1da177e4 LT |
464 | } |
465 | ||
4cc27bd6 | 466 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 467 | { |
f26788da | 468 | usb_serial_generic_close(port); |
ecb9eb80 | 469 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
1da177e4 LT |
470 | } |
471 | ||
39a66b8d | 472 | /* |
4cc27bd6 | 473 | * cp210x_get_termios |
39a66b8d CS |
474 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
475 | * from the device, corrects any unsupported values, and configures the | |
476 | * termios structure to reflect the state of the device | |
477 | */ | |
4cc27bd6 | 478 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
479 | struct usb_serial_port *port) |
480 | { | |
481 | unsigned int baud; | |
482 | ||
483 | if (tty) { | |
4cc27bd6 | 484 | cp210x_get_termios_port(tty->driver_data, |
adc8d746 | 485 | &tty->termios.c_cflag, &baud); |
d2ad67b3 | 486 | tty_encode_baud_rate(tty, baud, baud); |
4f2ab888 | 487 | } else { |
d2ad67b3 V |
488 | unsigned int cflag; |
489 | cflag = 0; | |
4cc27bd6 | 490 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
491 | } |
492 | } | |
493 | ||
494 | /* | |
4cc27bd6 CS |
495 | * cp210x_get_termios_port |
496 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 497 | */ |
4cc27bd6 | 498 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 499 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 500 | { |
660f3b14 | 501 | struct device *dev = &port->dev; |
39a66b8d | 502 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
503 | unsigned int baud; |
504 | unsigned int bits; | |
1da177e4 | 505 | |
7f482fc8 | 506 | cp210x_get_config(port, CP210X_GET_BAUDRATE, &baud, 4); |
1da177e4 | 507 | |
660f3b14 | 508 | dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); |
d2ad67b3 | 509 | *baudp = baud; |
9ab0f202 | 510 | |
d2ad67b3 | 511 | cflag = *cflagp; |
1da177e4 | 512 | |
4cc27bd6 | 513 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 | 514 | cflag &= ~CSIZE; |
ff7eb602 AC |
515 | switch (bits & BITS_DATA_MASK) { |
516 | case BITS_DATA_5: | |
660f3b14 | 517 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
ff7eb602 AC |
518 | cflag |= CS5; |
519 | break; | |
520 | case BITS_DATA_6: | |
660f3b14 | 521 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
ff7eb602 AC |
522 | cflag |= CS6; |
523 | break; | |
524 | case BITS_DATA_7: | |
660f3b14 | 525 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
ff7eb602 AC |
526 | cflag |= CS7; |
527 | break; | |
528 | case BITS_DATA_8: | |
660f3b14 | 529 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
ff7eb602 AC |
530 | cflag |= CS8; |
531 | break; | |
532 | case BITS_DATA_9: | |
660f3b14 | 533 | dev_dbg(dev, "%s - data bits = 9 (not supported, using 8 data bits)\n", __func__); |
ff7eb602 AC |
534 | cflag |= CS8; |
535 | bits &= ~BITS_DATA_MASK; | |
536 | bits |= BITS_DATA_8; | |
4cc27bd6 | 537 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
538 | break; |
539 | default: | |
660f3b14 | 540 | dev_dbg(dev, "%s - Unknown number of data bits, using 8\n", __func__); |
ff7eb602 AC |
541 | cflag |= CS8; |
542 | bits &= ~BITS_DATA_MASK; | |
543 | bits |= BITS_DATA_8; | |
4cc27bd6 | 544 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 545 | break; |
1da177e4 LT |
546 | } |
547 | ||
ff7eb602 AC |
548 | switch (bits & BITS_PARITY_MASK) { |
549 | case BITS_PARITY_NONE: | |
660f3b14 | 550 | dev_dbg(dev, "%s - parity = NONE\n", __func__); |
ff7eb602 AC |
551 | cflag &= ~PARENB; |
552 | break; | |
553 | case BITS_PARITY_ODD: | |
660f3b14 | 554 | dev_dbg(dev, "%s - parity = ODD\n", __func__); |
ff7eb602 AC |
555 | cflag |= (PARENB|PARODD); |
556 | break; | |
557 | case BITS_PARITY_EVEN: | |
660f3b14 | 558 | dev_dbg(dev, "%s - parity = EVEN\n", __func__); |
ff7eb602 AC |
559 | cflag &= ~PARODD; |
560 | cflag |= PARENB; | |
561 | break; | |
562 | case BITS_PARITY_MARK: | |
660f3b14 | 563 | dev_dbg(dev, "%s - parity = MARK\n", __func__); |
4b6181ca | 564 | cflag |= (PARENB|PARODD|CMSPAR); |
ff7eb602 AC |
565 | break; |
566 | case BITS_PARITY_SPACE: | |
660f3b14 | 567 | dev_dbg(dev, "%s - parity = SPACE\n", __func__); |
4b6181ca RK |
568 | cflag &= ~PARODD; |
569 | cflag |= (PARENB|CMSPAR); | |
ff7eb602 AC |
570 | break; |
571 | default: | |
660f3b14 | 572 | dev_dbg(dev, "%s - Unknown parity mode, disabling parity\n", __func__); |
ff7eb602 AC |
573 | cflag &= ~PARENB; |
574 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 575 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 576 | break; |
1da177e4 LT |
577 | } |
578 | ||
579 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
580 | switch (bits & BITS_STOP_MASK) { |
581 | case BITS_STOP_1: | |
660f3b14 | 582 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
ff7eb602 AC |
583 | break; |
584 | case BITS_STOP_1_5: | |
660f3b14 | 585 | dev_dbg(dev, "%s - stop bits = 1.5 (not supported, using 1 stop bit)\n", __func__); |
ff7eb602 | 586 | bits &= ~BITS_STOP_MASK; |
4cc27bd6 | 587 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
588 | break; |
589 | case BITS_STOP_2: | |
660f3b14 | 590 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
ff7eb602 AC |
591 | cflag |= CSTOPB; |
592 | break; | |
593 | default: | |
660f3b14 | 594 | dev_dbg(dev, "%s - Unknown number of stop bits, using 1 stop bit\n", __func__); |
ff7eb602 | 595 | bits &= ~BITS_STOP_MASK; |
4cc27bd6 | 596 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 597 | break; |
1da177e4 LT |
598 | } |
599 | ||
4cc27bd6 | 600 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 601 | if (modem_ctl[0] & 0x0008) { |
660f3b14 | 602 | dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); |
39a66b8d CS |
603 | cflag |= CRTSCTS; |
604 | } else { | |
660f3b14 | 605 | dev_dbg(dev, "%s - flow control = NONE\n", __func__); |
39a66b8d CS |
606 | cflag &= ~CRTSCTS; |
607 | } | |
608 | ||
d2ad67b3 | 609 | *cflagp = cflag; |
1da177e4 LT |
610 | } |
611 | ||
e5990874 JH |
612 | /* |
613 | * CP2101 supports the following baud rates: | |
614 | * | |
615 | * 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800, | |
616 | * 38400, 56000, 57600, 115200, 128000, 230400, 460800, 921600 | |
617 | * | |
618 | * CP2102 and CP2103 support the following additional rates: | |
619 | * | |
620 | * 4000, 16000, 51200, 64000, 76800, 153600, 250000, 256000, 500000, | |
621 | * 576000 | |
622 | * | |
623 | * The device will map a requested rate to a supported one, but the result | |
624 | * of requests for rates greater than 1053257 is undefined (see AN205). | |
625 | * | |
626 | * CP2104, CP2105 and CP2110 support most rates up to 2M, 921k and 1M baud, | |
627 | * respectively, with an error less than 1%. The actual rates are determined | |
628 | * by | |
629 | * | |
630 | * div = round(freq / (2 x prescale x request)) | |
631 | * actual = freq / (2 x prescale x div) | |
632 | * | |
633 | * For CP2104 and CP2105 freq is 48Mhz and prescale is 4 for request <= 365bps | |
634 | * or 1 otherwise. | |
635 | * For CP2110 freq is 24Mhz and prescale is 4 for request <= 300bps or 1 | |
636 | * otherwise. | |
637 | */ | |
638 | static void cp210x_change_speed(struct tty_struct *tty, | |
639 | struct usb_serial_port *port, struct ktermios *old_termios) | |
640 | { | |
641 | u32 baud; | |
642 | ||
adc8d746 | 643 | baud = tty->termios.c_ospeed; |
e5990874 | 644 | |
d1620ca9 JH |
645 | /* This maps the requested rate to a rate valid on cp2102 or cp2103, |
646 | * or to an arbitrary rate in [1M,2M]. | |
e5990874 JH |
647 | * |
648 | * NOTE: B0 is not implemented. | |
649 | */ | |
650 | baud = cp210x_quantise_baudrate(baud); | |
651 | ||
660f3b14 | 652 | dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud); |
e5990874 JH |
653 | if (cp210x_set_config(port, CP210X_SET_BAUDRATE, &baud, |
654 | sizeof(baud))) { | |
655 | dev_warn(&port->dev, "failed to set baud rate to %u\n", baud); | |
656 | if (old_termios) | |
657 | baud = old_termios->c_ospeed; | |
658 | else | |
659 | baud = 9600; | |
660 | } | |
661 | ||
662 | tty_encode_baud_rate(tty, baud, baud); | |
663 | } | |
664 | ||
4cc27bd6 | 665 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 666 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 667 | { |
660f3b14 | 668 | struct device *dev = &port->dev; |
9ab0f202 | 669 | unsigned int cflag, old_cflag; |
34b76fca | 670 | unsigned int bits; |
39a66b8d | 671 | unsigned int modem_ctl[4]; |
1da177e4 | 672 | |
95da310e | 673 | if (!tty) |
1da177e4 | 674 | return; |
9ab0f202 | 675 | |
adc8d746 | 676 | cflag = tty->termios.c_cflag; |
01e96d28 | 677 | old_cflag = old_termios->c_cflag; |
e5990874 | 678 | |
adc8d746 | 679 | if (tty->termios.c_ospeed != old_termios->c_ospeed) |
e5990874 | 680 | cp210x_change_speed(tty, port, old_termios); |
1da177e4 | 681 | |
39a66b8d | 682 | /* If the number of data bits is to be updated */ |
1da177e4 | 683 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 684 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
685 | bits &= ~BITS_DATA_MASK; |
686 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
687 | case CS5: |
688 | bits |= BITS_DATA_5; | |
660f3b14 | 689 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
ff7eb602 AC |
690 | break; |
691 | case CS6: | |
692 | bits |= BITS_DATA_6; | |
660f3b14 | 693 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
ff7eb602 AC |
694 | break; |
695 | case CS7: | |
696 | bits |= BITS_DATA_7; | |
660f3b14 | 697 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
ff7eb602 AC |
698 | break; |
699 | case CS8: | |
700 | bits |= BITS_DATA_8; | |
660f3b14 | 701 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
ff7eb602 AC |
702 | break; |
703 | /*case CS9: | |
704 | bits |= BITS_DATA_9; | |
660f3b14 | 705 | dev_dbg(dev, "%s - data bits = 9\n", __func__); |
ff7eb602 AC |
706 | break;*/ |
707 | default: | |
660f3b14 | 708 | dev_dbg(dev, "cp210x driver does not support the number of bits requested, using 8 bit mode\n"); |
4f2ab888 JH |
709 | bits |= BITS_DATA_8; |
710 | break; | |
1da177e4 | 711 | } |
4cc27bd6 | 712 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 713 | dev_dbg(dev, "Number of data bits requested not supported by device\n"); |
1da177e4 LT |
714 | } |
715 | ||
4b6181ca RK |
716 | if ((cflag & (PARENB|PARODD|CMSPAR)) != |
717 | (old_cflag & (PARENB|PARODD|CMSPAR))) { | |
4cc27bd6 | 718 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
719 | bits &= ~BITS_PARITY_MASK; |
720 | if (cflag & PARENB) { | |
4b6181ca | 721 | if (cflag & CMSPAR) { |
660f3b14 GKH |
722 | if (cflag & PARODD) { |
723 | bits |= BITS_PARITY_MARK; | |
724 | dev_dbg(dev, "%s - parity = MARK\n", __func__); | |
725 | } else { | |
726 | bits |= BITS_PARITY_SPACE; | |
727 | dev_dbg(dev, "%s - parity = SPACE\n", __func__); | |
728 | } | |
1da177e4 | 729 | } else { |
660f3b14 GKH |
730 | if (cflag & PARODD) { |
731 | bits |= BITS_PARITY_ODD; | |
732 | dev_dbg(dev, "%s - parity = ODD\n", __func__); | |
733 | } else { | |
734 | bits |= BITS_PARITY_EVEN; | |
735 | dev_dbg(dev, "%s - parity = EVEN\n", __func__); | |
736 | } | |
1da177e4 LT |
737 | } |
738 | } | |
4cc27bd6 | 739 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 740 | dev_dbg(dev, "Parity mode not supported by device\n"); |
1da177e4 LT |
741 | } |
742 | ||
743 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 744 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
745 | bits &= ~BITS_STOP_MASK; |
746 | if (cflag & CSTOPB) { | |
747 | bits |= BITS_STOP_2; | |
660f3b14 | 748 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
1da177e4 LT |
749 | } else { |
750 | bits |= BITS_STOP_1; | |
660f3b14 | 751 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
1da177e4 | 752 | } |
4cc27bd6 | 753 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 754 | dev_dbg(dev, "Number of stop bits requested not supported by device\n"); |
1da177e4 | 755 | } |
39a66b8d CS |
756 | |
757 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 758 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
660f3b14 GKH |
759 | dev_dbg(dev, "%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
760 | __func__, modem_ctl[0], modem_ctl[1], | |
761 | modem_ctl[2], modem_ctl[3]); | |
39a66b8d CS |
762 | |
763 | if (cflag & CRTSCTS) { | |
764 | modem_ctl[0] &= ~0x7B; | |
765 | modem_ctl[0] |= 0x09; | |
766 | modem_ctl[1] = 0x80; | |
660f3b14 | 767 | dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); |
39a66b8d CS |
768 | } else { |
769 | modem_ctl[0] &= ~0x7B; | |
770 | modem_ctl[0] |= 0x01; | |
771 | modem_ctl[1] |= 0x40; | |
660f3b14 | 772 | dev_dbg(dev, "%s - flow control = NONE\n", __func__); |
39a66b8d CS |
773 | } |
774 | ||
660f3b14 GKH |
775 | dev_dbg(dev, "%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
776 | __func__, modem_ctl[0], modem_ctl[1], | |
777 | modem_ctl[2], modem_ctl[3]); | |
4cc27bd6 | 778 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
779 | } |
780 | ||
781 | } | |
782 | ||
4f2ab888 | 783 | static int cp210x_tiocmset(struct tty_struct *tty, |
39a66b8d CS |
784 | unsigned int set, unsigned int clear) |
785 | { | |
95da310e | 786 | struct usb_serial_port *port = tty->driver_data; |
20b9d177 | 787 | return cp210x_tiocmset_port(port, set, clear); |
d2ad67b3 V |
788 | } |
789 | ||
20b9d177 | 790 | static int cp210x_tiocmset_port(struct usb_serial_port *port, |
d2ad67b3 V |
791 | unsigned int set, unsigned int clear) |
792 | { | |
b2bdd1f5 | 793 | unsigned int control = 0; |
39a66b8d | 794 | |
39a66b8d CS |
795 | if (set & TIOCM_RTS) { |
796 | control |= CONTROL_RTS; | |
797 | control |= CONTROL_WRITE_RTS; | |
798 | } | |
799 | if (set & TIOCM_DTR) { | |
800 | control |= CONTROL_DTR; | |
801 | control |= CONTROL_WRITE_DTR; | |
802 | } | |
803 | if (clear & TIOCM_RTS) { | |
804 | control &= ~CONTROL_RTS; | |
805 | control |= CONTROL_WRITE_RTS; | |
806 | } | |
807 | if (clear & TIOCM_DTR) { | |
808 | control &= ~CONTROL_DTR; | |
809 | control |= CONTROL_WRITE_DTR; | |
810 | } | |
811 | ||
660f3b14 | 812 | dev_dbg(&port->dev, "%s - control = 0x%.4x\n", __func__, control); |
39a66b8d | 813 | |
4cc27bd6 | 814 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
815 | } |
816 | ||
d94c7bd4 AC |
817 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
818 | { | |
819 | if (on) | |
20b9d177 | 820 | cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0); |
d94c7bd4 | 821 | else |
20b9d177 | 822 | cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS); |
d94c7bd4 AC |
823 | } |
824 | ||
4f2ab888 | 825 | static int cp210x_tiocmget(struct tty_struct *tty) |
39a66b8d | 826 | { |
95da310e | 827 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
828 | unsigned int control; |
829 | int result; | |
39a66b8d | 830 | |
4cc27bd6 | 831 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
832 | |
833 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
834 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
835 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
836 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
837 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
838 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
839 | ||
660f3b14 | 840 | dev_dbg(&port->dev, "%s - control = 0x%.2x\n", __func__, control); |
39a66b8d CS |
841 | |
842 | return result; | |
1da177e4 LT |
843 | } |
844 | ||
4f2ab888 | 845 | static void cp210x_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 846 | { |
95da310e | 847 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 848 | unsigned int state; |
1da177e4 | 849 | |
1da177e4 LT |
850 | if (break_state == 0) |
851 | state = BREAK_OFF; | |
852 | else | |
853 | state = BREAK_ON; | |
660f3b14 GKH |
854 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
855 | state == BREAK_OFF ? "off" : "on"); | |
4cc27bd6 | 856 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
857 | } |
858 | ||
4cc27bd6 | 859 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 860 | { |
4295fe77 JH |
861 | struct usb_host_interface *cur_altsetting; |
862 | struct cp210x_serial_private *spriv; | |
a5360a53 | 863 | |
4cc27bd6 | 864 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 | 865 | usb_reset_device(serial->dev); |
a5360a53 | 866 | |
4295fe77 JH |
867 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); |
868 | if (!spriv) | |
869 | return -ENOMEM; | |
a5360a53 | 870 | |
4295fe77 JH |
871 | cur_altsetting = serial->interface->cur_altsetting; |
872 | spriv->bInterfaceNumber = cur_altsetting->desc.bInterfaceNumber; | |
a5360a53 | 873 | |
4295fe77 | 874 | usb_set_serial_data(serial, spriv); |
a5360a53 | 875 | |
1da177e4 LT |
876 | return 0; |
877 | } | |
878 | ||
a5360a53 PF |
879 | static void cp210x_release(struct usb_serial *serial) |
880 | { | |
4295fe77 | 881 | struct cp210x_serial_private *spriv; |
a5360a53 | 882 | |
4295fe77 JH |
883 | spriv = usb_get_serial_data(serial); |
884 | kfree(spriv); | |
a5360a53 PF |
885 | } |
886 | ||
68e24113 | 887 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
888 | |
889 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 890 | MODULE_LICENSE("GPL"); |