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 */ |
1f4f714f | 56 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
b7c7cbc8 | 57 | { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ |
eefd9029 CS |
58 | { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */ |
59 | { USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */ | |
198b9517 | 60 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 61 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 62 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
8de7f4da | 63 | { USB_DEVICE(0x0FDE, 0xCA05) }, /* OWL Wireless Electricity Monitor CM-160 */ |
198b9517 | 64 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
65 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
66 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
b7c7cbc8 | 67 | { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */ |
0601e116 AK |
68 | { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */ |
69 | { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ | |
5de8b3ac | 70 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 71 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
eefd9029 CS |
72 | { USB_DEVICE(0x10C4, 0x8044) }, /* Cygnal Debug Adapter */ |
73 | { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */ | |
92f5cae2 | 74 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 75 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 76 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
eefd9029 | 77 | { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */ |
e988fc8a | 78 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
5bbfa6f4 | 79 | { USB_DEVICE(0x10C4, 0x80C4) }, /* Cygnal Integrated Products, Inc., Optris infrared thermometer */ |
e988fc8a | 80 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ |
92f5cae2 | 81 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 82 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 83 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 84 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
8bf16ba7 | 85 | { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */ |
fc4bd64c JH |
86 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
87 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
a57e82a1 | 88 | { USB_DEVICE(0x2405, 0x0003) }, /* West Mountain Radio RIGblaster Advantage */ |
0bf7a81c | 89 | { USB_DEVICE(0x10C4, 0x8156) }, /* B&G H3000 link cable */ |
e988fc8a | 90 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
3fcc8f96 | 91 | { USB_DEVICE(0x10C4, 0x815F) }, /* Timewave HamLinkUSB */ |
eefd9029 | 92 | { USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */ |
c6535668 | 93 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 94 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
08e87d0d | 95 | { USB_DEVICE(0x10C4, 0x81A9) }, /* Multiplex RC Interface */ |
59fba744 | 96 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
eefd9029 | 97 | { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */ |
78001e3d BS |
98 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
99 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 100 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
bd07c551 | 101 | { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */ |
b7c7cbc8 | 102 | { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ |
78001e3d | 103 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 104 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
25985edc | 105 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demonstration module */ |
c851e83f | 106 | { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */ |
b7c7cbc8 | 107 | { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ |
ba0f332c | 108 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
8bf16ba7 | 109 | { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */ |
881e3c98 | 110 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
faea63f7 | 111 | { USB_DEVICE(0x10C4, 0x83D8) }, /* DekTec DTA Plus VHF/UHF Booster/Attenuator */ |
8bf16ba7 | 112 | { USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */ |
faea63f7 | 113 | { USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */ |
d23bac9f | 114 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
541e05ec | 115 | { USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */ |
4eff0b40 CS |
116 | { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */ |
117 | { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */ | |
356fe44f | 118 | { USB_DEVICE(0x10C4, 0x85F8) }, /* Virtenio Preon32 */ |
4eff0b40 CS |
119 | { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */ |
120 | { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */ | |
e988fc8a | 121 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 122 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
a5360a53 PF |
123 | { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */ |
124 | { USB_DEVICE(0x10C4, 0xEA80) }, /* Silicon Labs factory default */ | |
eefd9029 | 125 | { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */ |
5de8b3ac CS |
126 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
127 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
128 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
129 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 130 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 131 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 132 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 133 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
3fcc8f96 CS |
134 | { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */ |
135 | { USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */ | |
5de8b3ac | 136 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
3fcc8f96 CS |
137 | { USB_DEVICE(0x166A, 0x0304) }, /* Clipsal 5000CT2 C-Bus Black and White Touchscreen */ |
138 | { USB_DEVICE(0x166A, 0x0305) }, /* Clipsal C-5000CT2 C-Bus Spectrum Colour Touchscreen */ | |
139 | { USB_DEVICE(0x166A, 0x0401) }, /* Clipsal L51xx C-Bus Architectural Dimmer */ | |
140 | { USB_DEVICE(0x166A, 0x0101) }, /* Clipsal 5560884 C-Bus Multi-room Audio Matrix Switcher */ | |
b0ce84d5 | 141 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
356c5a48 AIB |
142 | { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */ |
143 | { USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */ | |
144 | { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */ | |
145 | { USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */ | |
c6c1e449 BT |
146 | { USB_DEVICE(0x17A8, 0x0001) }, /* Kamstrup Optical Eye/3-wire */ |
147 | { USB_DEVICE(0x17A8, 0x0005) }, /* Kamstrup M-Bus Master MultiPort 250D */ | |
541e05ec CS |
148 | { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ |
149 | { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ | |
150 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ | |
93ad03d6 | 151 | { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */ |
3fcc8f96 CS |
152 | { USB_DEVICE(0x1E29, 0x0102) }, /* Festo CPX-USB */ |
153 | { USB_DEVICE(0x1E29, 0x0501) }, /* Festo CMSP */ | |
be3101c2 MK |
154 | { USB_DEVICE(0x1FB9, 0x0100) }, /* Lake Shore Model 121 Current Source */ |
155 | { USB_DEVICE(0x1FB9, 0x0200) }, /* Lake Shore Model 218A Temperature Monitor */ | |
156 | { USB_DEVICE(0x1FB9, 0x0201) }, /* Lake Shore Model 219 Temperature Monitor */ | |
157 | { USB_DEVICE(0x1FB9, 0x0202) }, /* Lake Shore Model 233 Temperature Transmitter */ | |
158 | { USB_DEVICE(0x1FB9, 0x0203) }, /* Lake Shore Model 235 Temperature Transmitter */ | |
159 | { USB_DEVICE(0x1FB9, 0x0300) }, /* Lake Shore Model 335 Temperature Controller */ | |
160 | { USB_DEVICE(0x1FB9, 0x0301) }, /* Lake Shore Model 336 Temperature Controller */ | |
161 | { USB_DEVICE(0x1FB9, 0x0302) }, /* Lake Shore Model 350 Temperature Controller */ | |
162 | { USB_DEVICE(0x1FB9, 0x0303) }, /* Lake Shore Model 371 AC Bridge */ | |
163 | { USB_DEVICE(0x1FB9, 0x0400) }, /* Lake Shore Model 411 Handheld Gaussmeter */ | |
164 | { USB_DEVICE(0x1FB9, 0x0401) }, /* Lake Shore Model 425 Gaussmeter */ | |
165 | { USB_DEVICE(0x1FB9, 0x0402) }, /* Lake Shore Model 455A Gaussmeter */ | |
166 | { USB_DEVICE(0x1FB9, 0x0403) }, /* Lake Shore Model 475A Gaussmeter */ | |
167 | { USB_DEVICE(0x1FB9, 0x0404) }, /* Lake Shore Model 465 Three Axis Gaussmeter */ | |
168 | { USB_DEVICE(0x1FB9, 0x0600) }, /* Lake Shore Model 625A Superconducting MPS */ | |
169 | { USB_DEVICE(0x1FB9, 0x0601) }, /* Lake Shore Model 642A Magnet Power Supply */ | |
170 | { USB_DEVICE(0x1FB9, 0x0602) }, /* Lake Shore Model 648 Magnet Power Supply */ | |
171 | { USB_DEVICE(0x1FB9, 0x0700) }, /* Lake Shore Model 737 VSM Controller */ | |
172 | { USB_DEVICE(0x1FB9, 0x0701) }, /* Lake Shore Model 776 Hall Matrix */ | |
791b7d7c | 173 | { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */ |
3fcc8f96 CS |
174 | { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */ |
175 | { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */ | |
541e05ec | 176 | { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ |
39a66b8d | 177 | { } /* Terminating Entry */ |
1da177e4 LT |
178 | }; |
179 | ||
ff7eb602 | 180 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 181 | |
4295fe77 | 182 | struct cp210x_serial_private { |
a5360a53 PF |
183 | __u8 bInterfaceNumber; |
184 | }; | |
185 | ||
4cc27bd6 | 186 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
187 | .driver = { |
188 | .owner = THIS_MODULE, | |
4f2ab888 | 189 | .name = "cp210x", |
18fcac35 | 190 | }, |
1da177e4 | 191 | .id_table = id_table, |
1da177e4 | 192 | .num_ports = 1, |
aea006b9 | 193 | .bulk_in_size = 256, |
d4e598f6 | 194 | .bulk_out_size = 256, |
4cc27bd6 CS |
195 | .open = cp210x_open, |
196 | .close = cp210x_close, | |
197 | .break_ctl = cp210x_break_ctl, | |
198 | .set_termios = cp210x_set_termios, | |
4f2ab888 | 199 | .tiocmget = cp210x_tiocmget, |
4cc27bd6 CS |
200 | .tiocmset = cp210x_tiocmset, |
201 | .attach = cp210x_startup, | |
a5360a53 | 202 | .release = cp210x_release, |
d14fc1a7 | 203 | .dtr_rts = cp210x_dtr_rts |
1da177e4 LT |
204 | }; |
205 | ||
08a4f6bc AS |
206 | static struct usb_serial_driver * const serial_drivers[] = { |
207 | &cp210x_device, NULL | |
208 | }; | |
209 | ||
39a66b8d | 210 | /* Config request types */ |
32445605 PF |
211 | #define REQTYPE_HOST_TO_INTERFACE 0x41 |
212 | #define REQTYPE_INTERFACE_TO_HOST 0xc1 | |
213 | #define REQTYPE_HOST_TO_DEVICE 0x40 | |
214 | #define REQTYPE_DEVICE_TO_HOST 0xc0 | |
1da177e4 | 215 | |
93ef1f1f CS |
216 | /* Config request codes */ |
217 | #define CP210X_IFC_ENABLE 0x00 | |
218 | #define CP210X_SET_BAUDDIV 0x01 | |
219 | #define CP210X_GET_BAUDDIV 0x02 | |
220 | #define CP210X_SET_LINE_CTL 0x03 | |
221 | #define CP210X_GET_LINE_CTL 0x04 | |
222 | #define CP210X_SET_BREAK 0x05 | |
223 | #define CP210X_IMM_CHAR 0x06 | |
224 | #define CP210X_SET_MHS 0x07 | |
225 | #define CP210X_GET_MDMSTS 0x08 | |
226 | #define CP210X_SET_XON 0x09 | |
227 | #define CP210X_SET_XOFF 0x0A | |
228 | #define CP210X_SET_EVENTMASK 0x0B | |
229 | #define CP210X_GET_EVENTMASK 0x0C | |
230 | #define CP210X_SET_CHAR 0x0D | |
231 | #define CP210X_GET_CHARS 0x0E | |
232 | #define CP210X_GET_PROPS 0x0F | |
233 | #define CP210X_GET_COMM_STATUS 0x10 | |
234 | #define CP210X_RESET 0x11 | |
235 | #define CP210X_PURGE 0x12 | |
236 | #define CP210X_SET_FLOW 0x13 | |
237 | #define CP210X_GET_FLOW 0x14 | |
238 | #define CP210X_EMBED_EVENTS 0x15 | |
239 | #define CP210X_GET_EVENTSTATE 0x16 | |
240 | #define CP210X_SET_CHARS 0x19 | |
7f482fc8 PF |
241 | #define CP210X_GET_BAUDRATE 0x1D |
242 | #define CP210X_SET_BAUDRATE 0x1E | |
93ef1f1f CS |
243 | |
244 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
245 | #define UART_ENABLE 0x0001 |
246 | #define UART_DISABLE 0x0000 | |
247 | ||
93ef1f1f | 248 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
249 | #define BAUD_RATE_GEN_FREQ 0x384000 |
250 | ||
93ef1f1f | 251 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 252 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 253 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
254 | #define BITS_DATA_6 0X0600 |
255 | #define BITS_DATA_7 0X0700 | |
256 | #define BITS_DATA_8 0X0800 | |
257 | #define BITS_DATA_9 0X0900 | |
258 | ||
259 | #define BITS_PARITY_MASK 0x00f0 | |
260 | #define BITS_PARITY_NONE 0x0000 | |
261 | #define BITS_PARITY_ODD 0x0010 | |
262 | #define BITS_PARITY_EVEN 0x0020 | |
263 | #define BITS_PARITY_MARK 0x0030 | |
264 | #define BITS_PARITY_SPACE 0x0040 | |
265 | ||
266 | #define BITS_STOP_MASK 0x000f | |
267 | #define BITS_STOP_1 0x0000 | |
268 | #define BITS_STOP_1_5 0x0001 | |
269 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 270 | |
93ef1f1f | 271 | /* CP210X_SET_BREAK */ |
72916791 CS |
272 | #define BREAK_ON 0x0001 |
273 | #define BREAK_OFF 0x0000 | |
1da177e4 | 274 | |
93ef1f1f | 275 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
276 | #define CONTROL_DTR 0x0001 |
277 | #define CONTROL_RTS 0x0002 | |
278 | #define CONTROL_CTS 0x0010 | |
279 | #define CONTROL_DSR 0x0020 | |
280 | #define CONTROL_RING 0x0040 | |
281 | #define CONTROL_DCD 0x0080 | |
282 | #define CONTROL_WRITE_DTR 0x0100 | |
283 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 284 | |
39a66b8d | 285 | /* |
4cc27bd6 CS |
286 | * cp210x_get_config |
287 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
288 | * 'size' is specified in bytes. |
289 | * 'data' is a pointer to a pre-allocated array of integers large | |
290 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
291 | */ | |
4cc27bd6 | 292 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 293 | unsigned int *data, int size) |
1da177e4 LT |
294 | { |
295 | struct usb_serial *serial = port->serial; | |
4295fe77 | 296 | struct cp210x_serial_private *spriv = usb_get_serial_data(serial); |
53ebb3b8 | 297 | __le32 *buf; |
39a66b8d CS |
298 | int result, i, length; |
299 | ||
300 | /* Number of integers required to contain the array */ | |
4f2ab888 | 301 | length = (((size - 1) | 3) + 1) / 4; |
39a66b8d | 302 | |
53ebb3b8 | 303 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
39a66b8d | 304 | if (!buf) { |
441b62c1 | 305 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
306 | return -ENOMEM; |
307 | } | |
1da177e4 | 308 | |
39a66b8d | 309 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 310 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
32445605 | 311 | request, REQTYPE_INTERFACE_TO_HOST, 0x0000, |
4295fe77 | 312 | spriv->bInterfaceNumber, buf, size, |
2d5733fc | 313 | USB_CTRL_GET_TIMEOUT); |
1da177e4 | 314 | |
39a66b8d | 315 | /* Convert data into an array of integers */ |
ff7eb602 | 316 | for (i = 0; i < length; i++) |
39a66b8d | 317 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 318 | |
39a66b8d | 319 | kfree(buf); |
1da177e4 | 320 | |
39a66b8d | 321 | if (result != size) { |
660f3b14 GKH |
322 | dev_dbg(&port->dev, "%s - Unable to send config request, request=0x%x size=%d result=%d\n", |
323 | __func__, request, size, result); | |
2479e2a9 JH |
324 | if (result > 0) |
325 | result = -EPROTO; | |
326 | ||
327 | return result; | |
39a66b8d | 328 | } |
1da177e4 | 329 | |
39a66b8d | 330 | return 0; |
1da177e4 LT |
331 | } |
332 | ||
39a66b8d | 333 | /* |
4cc27bd6 CS |
334 | * cp210x_set_config |
335 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
336 | * Values less than 16 bits wide are sent directly |
337 | * 'size' is specified in bytes. | |
338 | */ | |
4cc27bd6 | 339 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 340 | unsigned int *data, int size) |
1da177e4 LT |
341 | { |
342 | struct usb_serial *serial = port->serial; | |
4295fe77 | 343 | struct cp210x_serial_private *spriv = usb_get_serial_data(serial); |
53ebb3b8 | 344 | __le32 *buf; |
39a66b8d | 345 | int result, i, length; |
1da177e4 | 346 | |
39a66b8d | 347 | /* Number of integers required to contain the array */ |
4f2ab888 | 348 | length = (((size - 1) | 3) + 1) / 4; |
39a66b8d | 349 | |
53ebb3b8 | 350 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
39a66b8d | 351 | if (!buf) { |
4f2ab888 | 352 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
39a66b8d CS |
353 | return -ENOMEM; |
354 | } | |
355 | ||
356 | /* Array of integers into bytes */ | |
357 | for (i = 0; i < length; i++) | |
358 | buf[i] = cpu_to_le32(data[i]); | |
359 | ||
360 | if (size > 2) { | |
ff7eb602 | 361 | result = usb_control_msg(serial->dev, |
39a66b8d | 362 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 363 | request, REQTYPE_HOST_TO_INTERFACE, 0x0000, |
4295fe77 | 364 | spriv->bInterfaceNumber, buf, size, |
2d5733fc | 365 | USB_CTRL_SET_TIMEOUT); |
39a66b8d | 366 | } else { |
ff7eb602 | 367 | result = usb_control_msg(serial->dev, |
39a66b8d | 368 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 369 | request, REQTYPE_HOST_TO_INTERFACE, data[0], |
4295fe77 | 370 | spriv->bInterfaceNumber, NULL, 0, |
2d5733fc | 371 | USB_CTRL_SET_TIMEOUT); |
1da177e4 LT |
372 | } |
373 | ||
39a66b8d CS |
374 | kfree(buf); |
375 | ||
376 | if ((size > 2 && result != size) || result < 0) { | |
660f3b14 GKH |
377 | dev_dbg(&port->dev, "%s - Unable to send request, request=0x%x size=%d result=%d\n", |
378 | __func__, request, size, result); | |
2479e2a9 JH |
379 | if (result > 0) |
380 | result = -EPROTO; | |
381 | ||
382 | return result; | |
39a66b8d | 383 | } |
1da177e4 LT |
384 | |
385 | return 0; | |
386 | } | |
387 | ||
39a66b8d | 388 | /* |
4cc27bd6 CS |
389 | * cp210x_set_config_single |
390 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
391 | * without requiring an integer pointer |
392 | */ | |
4cc27bd6 | 393 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
394 | u8 request, unsigned int data) |
395 | { | |
4cc27bd6 | 396 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
397 | } |
398 | ||
ef8b6bcb | 399 | /* |
4cc27bd6 | 400 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
401 | * Quantises the baud rate as per AN205 Table 1 |
402 | */ | |
4f2ab888 JH |
403 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) |
404 | { | |
be125d9c JH |
405 | if (baud <= 300) |
406 | baud = 300; | |
ef8b6bcb CS |
407 | else if (baud <= 600) baud = 600; |
408 | else if (baud <= 1200) baud = 1200; | |
409 | else if (baud <= 1800) baud = 1800; | |
410 | else if (baud <= 2400) baud = 2400; | |
411 | else if (baud <= 4000) baud = 4000; | |
412 | else if (baud <= 4803) baud = 4800; | |
413 | else if (baud <= 7207) baud = 7200; | |
414 | else if (baud <= 9612) baud = 9600; | |
415 | else if (baud <= 14428) baud = 14400; | |
416 | else if (baud <= 16062) baud = 16000; | |
417 | else if (baud <= 19250) baud = 19200; | |
418 | else if (baud <= 28912) baud = 28800; | |
419 | else if (baud <= 38601) baud = 38400; | |
420 | else if (baud <= 51558) baud = 51200; | |
421 | else if (baud <= 56280) baud = 56000; | |
422 | else if (baud <= 58053) baud = 57600; | |
423 | else if (baud <= 64111) baud = 64000; | |
424 | else if (baud <= 77608) baud = 76800; | |
425 | else if (baud <= 117028) baud = 115200; | |
426 | else if (baud <= 129347) baud = 128000; | |
427 | else if (baud <= 156868) baud = 153600; | |
428 | else if (baud <= 237832) baud = 230400; | |
429 | else if (baud <= 254234) baud = 250000; | |
430 | else if (baud <= 273066) baud = 256000; | |
431 | else if (baud <= 491520) baud = 460800; | |
432 | else if (baud <= 567138) baud = 500000; | |
433 | else if (baud <= 670254) baud = 576000; | |
d1620ca9 JH |
434 | else if (baud < 1000000) |
435 | baud = 921600; | |
436 | else if (baud > 2000000) | |
437 | baud = 2000000; | |
ef8b6bcb CS |
438 | return baud; |
439 | } | |
440 | ||
a509a7e4 | 441 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 442 | { |
1da177e4 LT |
443 | int result; |
444 | ||
2479e2a9 JH |
445 | result = cp210x_set_config_single(port, CP210X_IFC_ENABLE, |
446 | UART_ENABLE); | |
447 | if (result) { | |
448 | dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); | |
449 | return result; | |
1da177e4 LT |
450 | } |
451 | ||
39a66b8d | 452 | /* Configure the termios structure */ |
4cc27bd6 | 453 | cp210x_get_termios(tty, port); |
55b2afbb | 454 | |
cdc32fd6 JH |
455 | /* The baud rate must be initialised on cp2104 */ |
456 | if (tty) | |
457 | cp210x_change_speed(tty, port, NULL); | |
458 | ||
55b2afbb | 459 | return usb_serial_generic_open(tty, port); |
1da177e4 LT |
460 | } |
461 | ||
4cc27bd6 | 462 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 463 | { |
f26788da | 464 | usb_serial_generic_close(port); |
1da177e4 | 465 | |
95bef012 ON |
466 | mutex_lock(&port->serial->disc_mutex); |
467 | if (!port->serial->disconnected) | |
4cc27bd6 | 468 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
95bef012 | 469 | mutex_unlock(&port->serial->disc_mutex); |
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 | |
660f3b14 | 673 | dev_dbg(dev, "%s - port %d\n", __func__, port->number); |
1da177e4 | 674 | |
95da310e | 675 | if (!tty) |
1da177e4 | 676 | return; |
9ab0f202 | 677 | |
adc8d746 | 678 | cflag = tty->termios.c_cflag; |
01e96d28 | 679 | old_cflag = old_termios->c_cflag; |
e5990874 | 680 | |
adc8d746 | 681 | if (tty->termios.c_ospeed != old_termios->c_ospeed) |
e5990874 | 682 | cp210x_change_speed(tty, port, old_termios); |
1da177e4 | 683 | |
39a66b8d | 684 | /* If the number of data bits is to be updated */ |
1da177e4 | 685 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
4cc27bd6 | 686 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
687 | bits &= ~BITS_DATA_MASK; |
688 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
689 | case CS5: |
690 | bits |= BITS_DATA_5; | |
660f3b14 | 691 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
ff7eb602 AC |
692 | break; |
693 | case CS6: | |
694 | bits |= BITS_DATA_6; | |
660f3b14 | 695 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
ff7eb602 AC |
696 | break; |
697 | case CS7: | |
698 | bits |= BITS_DATA_7; | |
660f3b14 | 699 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
ff7eb602 AC |
700 | break; |
701 | case CS8: | |
702 | bits |= BITS_DATA_8; | |
660f3b14 | 703 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
ff7eb602 AC |
704 | break; |
705 | /*case CS9: | |
706 | bits |= BITS_DATA_9; | |
660f3b14 | 707 | dev_dbg(dev, "%s - data bits = 9\n", __func__); |
ff7eb602 AC |
708 | break;*/ |
709 | default: | |
660f3b14 | 710 | dev_dbg(dev, "cp210x driver does not support the number of bits requested, using 8 bit mode\n"); |
4f2ab888 JH |
711 | bits |= BITS_DATA_8; |
712 | break; | |
1da177e4 | 713 | } |
4cc27bd6 | 714 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 715 | dev_dbg(dev, "Number of data bits requested not supported by device\n"); |
1da177e4 LT |
716 | } |
717 | ||
4b6181ca RK |
718 | if ((cflag & (PARENB|PARODD|CMSPAR)) != |
719 | (old_cflag & (PARENB|PARODD|CMSPAR))) { | |
4cc27bd6 | 720 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
721 | bits &= ~BITS_PARITY_MASK; |
722 | if (cflag & PARENB) { | |
4b6181ca | 723 | if (cflag & CMSPAR) { |
660f3b14 GKH |
724 | if (cflag & PARODD) { |
725 | bits |= BITS_PARITY_MARK; | |
726 | dev_dbg(dev, "%s - parity = MARK\n", __func__); | |
727 | } else { | |
728 | bits |= BITS_PARITY_SPACE; | |
729 | dev_dbg(dev, "%s - parity = SPACE\n", __func__); | |
730 | } | |
1da177e4 | 731 | } else { |
660f3b14 GKH |
732 | if (cflag & PARODD) { |
733 | bits |= BITS_PARITY_ODD; | |
734 | dev_dbg(dev, "%s - parity = ODD\n", __func__); | |
735 | } else { | |
736 | bits |= BITS_PARITY_EVEN; | |
737 | dev_dbg(dev, "%s - parity = EVEN\n", __func__); | |
738 | } | |
1da177e4 LT |
739 | } |
740 | } | |
4cc27bd6 | 741 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 742 | dev_dbg(dev, "Parity mode not supported by device\n"); |
1da177e4 LT |
743 | } |
744 | ||
745 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
4cc27bd6 | 746 | cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); |
1da177e4 LT |
747 | bits &= ~BITS_STOP_MASK; |
748 | if (cflag & CSTOPB) { | |
749 | bits |= BITS_STOP_2; | |
660f3b14 | 750 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
1da177e4 LT |
751 | } else { |
752 | bits |= BITS_STOP_1; | |
660f3b14 | 753 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
1da177e4 | 754 | } |
4cc27bd6 | 755 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 756 | dev_dbg(dev, "Number of stop bits requested not supported by device\n"); |
1da177e4 | 757 | } |
39a66b8d CS |
758 | |
759 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 760 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
660f3b14 GKH |
761 | dev_dbg(dev, "%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
762 | __func__, modem_ctl[0], modem_ctl[1], | |
763 | modem_ctl[2], modem_ctl[3]); | |
39a66b8d CS |
764 | |
765 | if (cflag & CRTSCTS) { | |
766 | modem_ctl[0] &= ~0x7B; | |
767 | modem_ctl[0] |= 0x09; | |
768 | modem_ctl[1] = 0x80; | |
660f3b14 | 769 | dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); |
39a66b8d CS |
770 | } else { |
771 | modem_ctl[0] &= ~0x7B; | |
772 | modem_ctl[0] |= 0x01; | |
773 | modem_ctl[1] |= 0x40; | |
660f3b14 | 774 | dev_dbg(dev, "%s - flow control = NONE\n", __func__); |
39a66b8d CS |
775 | } |
776 | ||
660f3b14 GKH |
777 | dev_dbg(dev, "%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
778 | __func__, modem_ctl[0], modem_ctl[1], | |
779 | modem_ctl[2], modem_ctl[3]); | |
4cc27bd6 | 780 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
781 | } |
782 | ||
783 | } | |
784 | ||
4f2ab888 | 785 | static int cp210x_tiocmset(struct tty_struct *tty, |
39a66b8d CS |
786 | unsigned int set, unsigned int clear) |
787 | { | |
95da310e | 788 | struct usb_serial_port *port = tty->driver_data; |
20b9d177 | 789 | return cp210x_tiocmset_port(port, set, clear); |
d2ad67b3 V |
790 | } |
791 | ||
20b9d177 | 792 | static int cp210x_tiocmset_port(struct usb_serial_port *port, |
d2ad67b3 V |
793 | unsigned int set, unsigned int clear) |
794 | { | |
b2bdd1f5 | 795 | unsigned int control = 0; |
39a66b8d | 796 | |
39a66b8d CS |
797 | if (set & TIOCM_RTS) { |
798 | control |= CONTROL_RTS; | |
799 | control |= CONTROL_WRITE_RTS; | |
800 | } | |
801 | if (set & TIOCM_DTR) { | |
802 | control |= CONTROL_DTR; | |
803 | control |= CONTROL_WRITE_DTR; | |
804 | } | |
805 | if (clear & TIOCM_RTS) { | |
806 | control &= ~CONTROL_RTS; | |
807 | control |= CONTROL_WRITE_RTS; | |
808 | } | |
809 | if (clear & TIOCM_DTR) { | |
810 | control &= ~CONTROL_DTR; | |
811 | control |= CONTROL_WRITE_DTR; | |
812 | } | |
813 | ||
660f3b14 | 814 | dev_dbg(&port->dev, "%s - control = 0x%.4x\n", __func__, control); |
39a66b8d | 815 | |
4cc27bd6 | 816 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
817 | } |
818 | ||
d94c7bd4 AC |
819 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
820 | { | |
821 | if (on) | |
20b9d177 | 822 | cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0); |
d94c7bd4 | 823 | else |
20b9d177 | 824 | cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS); |
d94c7bd4 AC |
825 | } |
826 | ||
4f2ab888 | 827 | static int cp210x_tiocmget(struct tty_struct *tty) |
39a66b8d | 828 | { |
95da310e | 829 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
830 | unsigned int control; |
831 | int result; | |
39a66b8d | 832 | |
4cc27bd6 | 833 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
834 | |
835 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
836 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
837 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
838 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
839 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
840 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
841 | ||
660f3b14 | 842 | dev_dbg(&port->dev, "%s - control = 0x%.2x\n", __func__, control); |
39a66b8d CS |
843 | |
844 | return result; | |
1da177e4 LT |
845 | } |
846 | ||
4f2ab888 | 847 | static void cp210x_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 848 | { |
95da310e | 849 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 850 | unsigned int state; |
1da177e4 | 851 | |
1da177e4 LT |
852 | if (break_state == 0) |
853 | state = BREAK_OFF; | |
854 | else | |
855 | state = BREAK_ON; | |
660f3b14 GKH |
856 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
857 | state == BREAK_OFF ? "off" : "on"); | |
4cc27bd6 | 858 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
859 | } |
860 | ||
4cc27bd6 | 861 | static int cp210x_startup(struct usb_serial *serial) |
1da177e4 | 862 | { |
4295fe77 JH |
863 | struct usb_host_interface *cur_altsetting; |
864 | struct cp210x_serial_private *spriv; | |
a5360a53 | 865 | |
4cc27bd6 | 866 | /* cp210x buffers behave strangely unless device is reset */ |
1da177e4 | 867 | usb_reset_device(serial->dev); |
a5360a53 | 868 | |
4295fe77 JH |
869 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); |
870 | if (!spriv) | |
871 | return -ENOMEM; | |
a5360a53 | 872 | |
4295fe77 JH |
873 | cur_altsetting = serial->interface->cur_altsetting; |
874 | spriv->bInterfaceNumber = cur_altsetting->desc.bInterfaceNumber; | |
a5360a53 | 875 | |
4295fe77 | 876 | usb_set_serial_data(serial, spriv); |
a5360a53 | 877 | |
1da177e4 LT |
878 | return 0; |
879 | } | |
880 | ||
a5360a53 PF |
881 | static void cp210x_release(struct usb_serial *serial) |
882 | { | |
4295fe77 | 883 | struct cp210x_serial_private *spriv; |
a5360a53 | 884 | |
4295fe77 JH |
885 | spriv = usb_get_serial_data(serial); |
886 | kfree(spriv); | |
a5360a53 PF |
887 | } |
888 | ||
68e24113 | 889 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
890 | |
891 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 892 | MODULE_LICENSE("GPL"); |