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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*); |
6f923a01 | 41 | static bool cp210x_tx_empty(struct usb_serial_port *port); |
60b33c13 | 42 | static int cp210x_tiocmget(struct tty_struct *); |
20b9d177 AC |
43 | static int cp210x_tiocmset(struct tty_struct *, unsigned int, unsigned int); |
44 | static int cp210x_tiocmset_port(struct usb_serial_port *port, | |
d2ad67b3 | 45 | unsigned int, unsigned int); |
4cc27bd6 | 46 | static void cp210x_break_ctl(struct tty_struct *, int); |
e2ae67a3 KS |
47 | static int cp210x_port_probe(struct usb_serial_port *); |
48 | static int cp210x_port_remove(struct usb_serial_port *); | |
d94c7bd4 | 49 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on); |
1da177e4 | 50 | |
7d40d7e8 | 51 | static const struct usb_device_id id_table[] = { |
2f1136d1 | 52 | { USB_DEVICE(0x045B, 0x0053) }, /* Renesas RX610 RX-Stick */ |
5091b587 | 53 | { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ |
59fba744 | 54 | { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
5b22a32e | 55 | { USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ |
b7c7cbc8 | 56 | { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ |
90625070 | 57 | { USB_DEVICE(0x0846, 0x1100) }, /* NetGear Managed Switch M4100 series, M5300 series, M7100 series */ |
1f4f714f | 58 | { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ |
b7c7cbc8 | 59 | { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ |
a6f03312 | 60 | { USB_DEVICE(0x0908, 0x01FF) }, /* Siemens RUGGEDCOM USB Serial Console */ |
eefd9029 CS |
61 | { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */ |
62 | { USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */ | |
198b9517 | 63 | { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ |
014840ec | 64 | { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ |
59fba744 | 65 | { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ |
8de7f4da | 66 | { USB_DEVICE(0x0FDE, 0xCA05) }, /* OWL Wireless Electricity Monitor CM-160 */ |
198b9517 | 67 | { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ |
e988fc8a CS |
68 | { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ |
69 | { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
b7c7cbc8 | 70 | { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */ |
0601e116 AK |
71 | { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */ |
72 | { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ | |
5de8b3ac | 73 | { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ |
59224f53 | 74 | { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ |
eefd9029 CS |
75 | { USB_DEVICE(0x10C4, 0x8044) }, /* Cygnal Debug Adapter */ |
76 | { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */ | |
92f5cae2 | 77 | { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ |
9a18e75f | 78 | { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ |
212a4b4e | 79 | { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ |
eefd9029 | 80 | { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */ |
e988fc8a | 81 | { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ |
5bbfa6f4 | 82 | { USB_DEVICE(0x10C4, 0x80C4) }, /* Cygnal Integrated Products, Inc., Optris infrared thermometer */ |
e988fc8a | 83 | { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ |
92f5cae2 | 84 | { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ |
e988fc8a | 85 | { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ |
ba0f332c | 86 | { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ |
e988fc8a | 87 | { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ |
8bf16ba7 | 88 | { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */ |
fc4bd64c JH |
89 | { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ |
90 | { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
a57e82a1 | 91 | { USB_DEVICE(0x2405, 0x0003) }, /* West Mountain Radio RIGblaster Advantage */ |
0bf7a81c | 92 | { USB_DEVICE(0x10C4, 0x8156) }, /* B&G H3000 link cable */ |
e988fc8a | 93 | { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ |
3fcc8f96 | 94 | { USB_DEVICE(0x10C4, 0x815F) }, /* Timewave HamLinkUSB */ |
eefd9029 | 95 | { USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */ |
c6535668 | 96 | { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ |
96623697 | 97 | { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ |
08e87d0d | 98 | { USB_DEVICE(0x10C4, 0x81A9) }, /* Multiplex RC Interface */ |
59fba744 | 99 | { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ |
eefd9029 | 100 | { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */ |
78001e3d BS |
101 | { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ |
102 | { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
8be27c2d | 103 | { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ |
bd07c551 | 104 | { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */ |
b7c7cbc8 | 105 | { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ |
78001e3d | 106 | { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ |
877e262c | 107 | { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ |
25985edc | 108 | { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demonstration module */ |
72b30079 | 109 | { USB_DEVICE(0x10C4, 0x8281) }, /* Nanotec Plug & Drive */ |
c851e83f | 110 | { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */ |
b7c7cbc8 | 111 | { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ |
ba0f332c | 112 | { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ |
8bf16ba7 | 113 | { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */ |
881e3c98 | 114 | { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ |
faea63f7 | 115 | { USB_DEVICE(0x10C4, 0x83D8) }, /* DekTec DTA Plus VHF/UHF Booster/Attenuator */ |
8bf16ba7 | 116 | { USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */ |
faea63f7 | 117 | { USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */ |
d23bac9f | 118 | { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ |
541e05ec | 119 | { USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */ |
4eff0b40 CS |
120 | { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */ |
121 | { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */ | |
356fe44f | 122 | { USB_DEVICE(0x10C4, 0x85F8) }, /* Virtenio Preon32 */ |
4eff0b40 CS |
123 | { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */ |
124 | { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */ | |
1ae78a48 DP |
125 | { USB_DEVICE(0x10C4, 0x8856) }, /* CEL EM357 ZigBee USB Stick - LR */ |
126 | { USB_DEVICE(0x10C4, 0x8857) }, /* CEL EM357 ZigBee USB Stick */ | |
76811569 SR |
127 | { USB_DEVICE(0x10C4, 0x88A4) }, /* MMB Networks ZigBee USB Device */ |
128 | { USB_DEVICE(0x10C4, 0x88A5) }, /* Planet Innovation Ingeni ZigBee USB Device */ | |
bfc2d7df | 129 | { USB_DEVICE(0x10C4, 0x8946) }, /* Ketra N1 Wireless Interface */ |
1ae78a48 | 130 | { USB_DEVICE(0x10C4, 0x8977) }, /* CEL MeshWorks DevKit Device */ |
c735ed74 | 131 | { USB_DEVICE(0x10C4, 0x8998) }, /* KCF Technologies PRN */ |
df72d588 | 132 | { USB_DEVICE(0x10C4, 0x8A2A) }, /* HubZ dual ZigBee and Z-Wave dongle */ |
e988fc8a | 133 | { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ |
61926b97 | 134 | { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ |
a5360a53 | 135 | { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */ |
eefd9029 | 136 | { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */ |
5de8b3ac CS |
137 | { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ |
138 | { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
139 | { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
140 | { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
ebaf494e | 141 | { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ |
b7c7cbc8 | 142 | { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ |
e05998d5 | 143 | { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ |
b7c7cbc8 | 144 | { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ |
3fcc8f96 CS |
145 | { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */ |
146 | { USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */ | |
5de8b3ac | 147 | { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ |
3fcc8f96 CS |
148 | { USB_DEVICE(0x166A, 0x0304) }, /* Clipsal 5000CT2 C-Bus Black and White Touchscreen */ |
149 | { USB_DEVICE(0x166A, 0x0305) }, /* Clipsal C-5000CT2 C-Bus Spectrum Colour Touchscreen */ | |
150 | { USB_DEVICE(0x166A, 0x0401) }, /* Clipsal L51xx C-Bus Architectural Dimmer */ | |
151 | { USB_DEVICE(0x166A, 0x0101) }, /* Clipsal 5560884 C-Bus Multi-room Audio Matrix Switcher */ | |
675af708 MG |
152 | { USB_DEVICE(0x16C0, 0x09B0) }, /* Lunatico Seletek */ |
153 | { USB_DEVICE(0x16C0, 0x09B1) }, /* Lunatico Seletek */ | |
b0ce84d5 | 154 | { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ |
356c5a48 AIB |
155 | { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */ |
156 | { USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */ | |
157 | { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */ | |
158 | { USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */ | |
c6c1e449 BT |
159 | { USB_DEVICE(0x17A8, 0x0001) }, /* Kamstrup Optical Eye/3-wire */ |
160 | { USB_DEVICE(0x17A8, 0x0005) }, /* Kamstrup M-Bus Master MultiPort 250D */ | |
541e05ec CS |
161 | { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ |
162 | { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ | |
163 | { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ | |
f7d7f59a | 164 | { USB_DEVICE(0x18EF, 0xE025) }, /* ELV Marble Sound Board 1 */ |
b579fa52 | 165 | { USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */ |
b9326057 | 166 | { USB_DEVICE(0x1B1C, 0x1C00) }, /* Corsair USB Dongle */ |
35cc83ea | 167 | { USB_DEVICE(0x1BA4, 0x0002) }, /* Silicon Labs 358x factory default */ |
93ad03d6 | 168 | { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */ |
dee80ad1 | 169 | { USB_DEVICE(0x1D6F, 0x0010) }, /* Seluxit ApS RF Dongle */ |
3fcc8f96 CS |
170 | { USB_DEVICE(0x1E29, 0x0102) }, /* Festo CPX-USB */ |
171 | { USB_DEVICE(0x1E29, 0x0501) }, /* Festo CMSP */ | |
be3101c2 MK |
172 | { USB_DEVICE(0x1FB9, 0x0100) }, /* Lake Shore Model 121 Current Source */ |
173 | { USB_DEVICE(0x1FB9, 0x0200) }, /* Lake Shore Model 218A Temperature Monitor */ | |
174 | { USB_DEVICE(0x1FB9, 0x0201) }, /* Lake Shore Model 219 Temperature Monitor */ | |
175 | { USB_DEVICE(0x1FB9, 0x0202) }, /* Lake Shore Model 233 Temperature Transmitter */ | |
176 | { USB_DEVICE(0x1FB9, 0x0203) }, /* Lake Shore Model 235 Temperature Transmitter */ | |
177 | { USB_DEVICE(0x1FB9, 0x0300) }, /* Lake Shore Model 335 Temperature Controller */ | |
178 | { USB_DEVICE(0x1FB9, 0x0301) }, /* Lake Shore Model 336 Temperature Controller */ | |
179 | { USB_DEVICE(0x1FB9, 0x0302) }, /* Lake Shore Model 350 Temperature Controller */ | |
180 | { USB_DEVICE(0x1FB9, 0x0303) }, /* Lake Shore Model 371 AC Bridge */ | |
181 | { USB_DEVICE(0x1FB9, 0x0400) }, /* Lake Shore Model 411 Handheld Gaussmeter */ | |
182 | { USB_DEVICE(0x1FB9, 0x0401) }, /* Lake Shore Model 425 Gaussmeter */ | |
183 | { USB_DEVICE(0x1FB9, 0x0402) }, /* Lake Shore Model 455A Gaussmeter */ | |
184 | { USB_DEVICE(0x1FB9, 0x0403) }, /* Lake Shore Model 475A Gaussmeter */ | |
185 | { USB_DEVICE(0x1FB9, 0x0404) }, /* Lake Shore Model 465 Three Axis Gaussmeter */ | |
186 | { USB_DEVICE(0x1FB9, 0x0600) }, /* Lake Shore Model 625A Superconducting MPS */ | |
187 | { USB_DEVICE(0x1FB9, 0x0601) }, /* Lake Shore Model 642A Magnet Power Supply */ | |
188 | { USB_DEVICE(0x1FB9, 0x0602) }, /* Lake Shore Model 648 Magnet Power Supply */ | |
189 | { USB_DEVICE(0x1FB9, 0x0700) }, /* Lake Shore Model 737 VSM Controller */ | |
190 | { USB_DEVICE(0x1FB9, 0x0701) }, /* Lake Shore Model 776 Hall Matrix */ | |
f98a7aa8 | 191 | { USB_DEVICE(0x2626, 0xEA60) }, /* Aruba Networks 7xxx USB Serial Console */ |
791b7d7c | 192 | { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */ |
3fcc8f96 CS |
193 | { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */ |
194 | { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */ | |
541e05ec | 195 | { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ |
39a66b8d | 196 | { } /* Terminating Entry */ |
1da177e4 LT |
197 | }; |
198 | ||
ff7eb602 | 199 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 200 | |
e2ae67a3 | 201 | struct cp210x_port_private { |
a5360a53 | 202 | __u8 bInterfaceNumber; |
d0bf1ff0 | 203 | bool has_swapped_line_ctl; |
a5360a53 PF |
204 | }; |
205 | ||
4cc27bd6 | 206 | static struct usb_serial_driver cp210x_device = { |
18fcac35 GKH |
207 | .driver = { |
208 | .owner = THIS_MODULE, | |
4f2ab888 | 209 | .name = "cp210x", |
18fcac35 | 210 | }, |
1da177e4 | 211 | .id_table = id_table, |
1da177e4 | 212 | .num_ports = 1, |
aea006b9 | 213 | .bulk_in_size = 256, |
d4e598f6 | 214 | .bulk_out_size = 256, |
4cc27bd6 CS |
215 | .open = cp210x_open, |
216 | .close = cp210x_close, | |
217 | .break_ctl = cp210x_break_ctl, | |
218 | .set_termios = cp210x_set_termios, | |
6f923a01 | 219 | .tx_empty = cp210x_tx_empty, |
4f2ab888 | 220 | .tiocmget = cp210x_tiocmget, |
4cc27bd6 | 221 | .tiocmset = cp210x_tiocmset, |
e2ae67a3 KS |
222 | .port_probe = cp210x_port_probe, |
223 | .port_remove = cp210x_port_remove, | |
d14fc1a7 | 224 | .dtr_rts = cp210x_dtr_rts |
1da177e4 LT |
225 | }; |
226 | ||
08a4f6bc AS |
227 | static struct usb_serial_driver * const serial_drivers[] = { |
228 | &cp210x_device, NULL | |
229 | }; | |
230 | ||
39a66b8d | 231 | /* Config request types */ |
32445605 PF |
232 | #define REQTYPE_HOST_TO_INTERFACE 0x41 |
233 | #define REQTYPE_INTERFACE_TO_HOST 0xc1 | |
234 | #define REQTYPE_HOST_TO_DEVICE 0x40 | |
235 | #define REQTYPE_DEVICE_TO_HOST 0xc0 | |
1da177e4 | 236 | |
93ef1f1f CS |
237 | /* Config request codes */ |
238 | #define CP210X_IFC_ENABLE 0x00 | |
239 | #define CP210X_SET_BAUDDIV 0x01 | |
240 | #define CP210X_GET_BAUDDIV 0x02 | |
241 | #define CP210X_SET_LINE_CTL 0x03 | |
242 | #define CP210X_GET_LINE_CTL 0x04 | |
243 | #define CP210X_SET_BREAK 0x05 | |
244 | #define CP210X_IMM_CHAR 0x06 | |
245 | #define CP210X_SET_MHS 0x07 | |
246 | #define CP210X_GET_MDMSTS 0x08 | |
247 | #define CP210X_SET_XON 0x09 | |
248 | #define CP210X_SET_XOFF 0x0A | |
249 | #define CP210X_SET_EVENTMASK 0x0B | |
250 | #define CP210X_GET_EVENTMASK 0x0C | |
251 | #define CP210X_SET_CHAR 0x0D | |
252 | #define CP210X_GET_CHARS 0x0E | |
253 | #define CP210X_GET_PROPS 0x0F | |
254 | #define CP210X_GET_COMM_STATUS 0x10 | |
255 | #define CP210X_RESET 0x11 | |
256 | #define CP210X_PURGE 0x12 | |
257 | #define CP210X_SET_FLOW 0x13 | |
258 | #define CP210X_GET_FLOW 0x14 | |
259 | #define CP210X_EMBED_EVENTS 0x15 | |
260 | #define CP210X_GET_EVENTSTATE 0x16 | |
261 | #define CP210X_SET_CHARS 0x19 | |
7f482fc8 PF |
262 | #define CP210X_GET_BAUDRATE 0x1D |
263 | #define CP210X_SET_BAUDRATE 0x1E | |
93ef1f1f CS |
264 | |
265 | /* CP210X_IFC_ENABLE */ | |
1da177e4 LT |
266 | #define UART_ENABLE 0x0001 |
267 | #define UART_DISABLE 0x0000 | |
268 | ||
93ef1f1f | 269 | /* CP210X_(SET|GET)_BAUDDIV */ |
1da177e4 LT |
270 | #define BAUD_RATE_GEN_FREQ 0x384000 |
271 | ||
93ef1f1f | 272 | /* CP210X_(SET|GET)_LINE_CTL */ |
1da177e4 | 273 | #define BITS_DATA_MASK 0X0f00 |
39a66b8d | 274 | #define BITS_DATA_5 0X0500 |
1da177e4 LT |
275 | #define BITS_DATA_6 0X0600 |
276 | #define BITS_DATA_7 0X0700 | |
277 | #define BITS_DATA_8 0X0800 | |
278 | #define BITS_DATA_9 0X0900 | |
279 | ||
280 | #define BITS_PARITY_MASK 0x00f0 | |
281 | #define BITS_PARITY_NONE 0x0000 | |
282 | #define BITS_PARITY_ODD 0x0010 | |
283 | #define BITS_PARITY_EVEN 0x0020 | |
284 | #define BITS_PARITY_MARK 0x0030 | |
285 | #define BITS_PARITY_SPACE 0x0040 | |
286 | ||
287 | #define BITS_STOP_MASK 0x000f | |
288 | #define BITS_STOP_1 0x0000 | |
289 | #define BITS_STOP_1_5 0x0001 | |
290 | #define BITS_STOP_2 0x0002 | |
39a66b8d | 291 | |
93ef1f1f | 292 | /* CP210X_SET_BREAK */ |
72916791 CS |
293 | #define BREAK_ON 0x0001 |
294 | #define BREAK_OFF 0x0000 | |
1da177e4 | 295 | |
93ef1f1f | 296 | /* CP210X_(SET_MHS|GET_MDMSTS) */ |
39a66b8d CS |
297 | #define CONTROL_DTR 0x0001 |
298 | #define CONTROL_RTS 0x0002 | |
299 | #define CONTROL_CTS 0x0010 | |
300 | #define CONTROL_DSR 0x0020 | |
301 | #define CONTROL_RING 0x0040 | |
302 | #define CONTROL_DCD 0x0080 | |
303 | #define CONTROL_WRITE_DTR 0x0100 | |
304 | #define CONTROL_WRITE_RTS 0x0200 | |
1da177e4 | 305 | |
6f923a01 KS |
306 | /* CP210X_GET_COMM_STATUS returns these 0x13 bytes */ |
307 | struct cp210x_comm_status { | |
308 | __le32 ulErrors; | |
309 | __le32 ulHoldReasons; | |
310 | __le32 ulAmountInInQueue; | |
311 | __le32 ulAmountInOutQueue; | |
312 | u8 bEofReceived; | |
313 | u8 bWaitForImmediate; | |
314 | u8 bReserved; | |
315 | } __packed; | |
316 | ||
ebfb319b KS |
317 | /* |
318 | * CP210X_PURGE - 16 bits passed in wValue of USB request. | |
319 | * SiLabs app note AN571 gives a strange description of the 4 bits: | |
320 | * bit 0 or bit 2 clears the transmit queue and 1 or 3 receive. | |
321 | * writing 1 to all, however, purges cp2108 well enough to avoid the hang. | |
322 | */ | |
323 | #define PURGE_ALL 0x000f | |
324 | ||
39a66b8d | 325 | /* |
4cc27bd6 CS |
326 | * cp210x_get_config |
327 | * Reads from the CP210x configuration registers | |
39a66b8d CS |
328 | * 'size' is specified in bytes. |
329 | * 'data' is a pointer to a pre-allocated array of integers large | |
330 | * enough to hold 'size' bytes (with 4 bytes to each integer) | |
331 | */ | |
4cc27bd6 | 332 | static int cp210x_get_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 333 | unsigned int *data, int size) |
1da177e4 LT |
334 | { |
335 | struct usb_serial *serial = port->serial; | |
e2ae67a3 | 336 | struct cp210x_port_private *port_priv = usb_get_serial_port_data(port); |
53ebb3b8 | 337 | __le32 *buf; |
39a66b8d CS |
338 | int result, i, length; |
339 | ||
340 | /* Number of integers required to contain the array */ | |
4f2ab888 | 341 | length = (((size - 1) | 3) + 1) / 4; |
39a66b8d | 342 | |
53ebb3b8 | 343 | buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); |
10c642d0 | 344 | if (!buf) |
39a66b8d | 345 | return -ENOMEM; |
1da177e4 | 346 | |
39a66b8d | 347 | /* Issue the request, attempting to read 'size' bytes */ |
ff7eb602 | 348 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
32445605 | 349 | request, REQTYPE_INTERFACE_TO_HOST, 0x0000, |
e2ae67a3 | 350 | port_priv->bInterfaceNumber, buf, size, |
2d5733fc | 351 | USB_CTRL_GET_TIMEOUT); |
1da177e4 | 352 | |
39a66b8d | 353 | /* Convert data into an array of integers */ |
ff7eb602 | 354 | for (i = 0; i < length; i++) |
39a66b8d | 355 | data[i] = le32_to_cpu(buf[i]); |
1da177e4 | 356 | |
39a66b8d | 357 | kfree(buf); |
1da177e4 | 358 | |
39a66b8d | 359 | if (result != size) { |
660f3b14 GKH |
360 | dev_dbg(&port->dev, "%s - Unable to send config request, request=0x%x size=%d result=%d\n", |
361 | __func__, request, size, result); | |
2479e2a9 JH |
362 | if (result > 0) |
363 | result = -EPROTO; | |
364 | ||
365 | return result; | |
39a66b8d | 366 | } |
1da177e4 | 367 | |
39a66b8d | 368 | return 0; |
1da177e4 LT |
369 | } |
370 | ||
39a66b8d | 371 | /* |
4cc27bd6 CS |
372 | * cp210x_set_config |
373 | * Writes to the CP210x configuration registers | |
39a66b8d CS |
374 | * Values less than 16 bits wide are sent directly |
375 | * 'size' is specified in bytes. | |
376 | */ | |
4cc27bd6 | 377 | static int cp210x_set_config(struct usb_serial_port *port, u8 request, |
39a66b8d | 378 | unsigned int *data, int size) |
1da177e4 LT |
379 | { |
380 | struct usb_serial *serial = port->serial; | |
e2ae67a3 | 381 | struct cp210x_port_private *port_priv = usb_get_serial_port_data(port); |
53ebb3b8 | 382 | __le32 *buf; |
39a66b8d | 383 | int result, i, length; |
1da177e4 | 384 | |
39a66b8d | 385 | /* Number of integers required to contain the array */ |
4f2ab888 | 386 | length = (((size - 1) | 3) + 1) / 4; |
39a66b8d | 387 | |
53ebb3b8 | 388 | buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); |
10c642d0 | 389 | if (!buf) |
39a66b8d | 390 | return -ENOMEM; |
39a66b8d CS |
391 | |
392 | /* Array of integers into bytes */ | |
393 | for (i = 0; i < length; i++) | |
394 | buf[i] = cpu_to_le32(data[i]); | |
395 | ||
396 | if (size > 2) { | |
ff7eb602 | 397 | result = usb_control_msg(serial->dev, |
39a66b8d | 398 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 399 | request, REQTYPE_HOST_TO_INTERFACE, 0x0000, |
e2ae67a3 | 400 | port_priv->bInterfaceNumber, buf, size, |
2d5733fc | 401 | USB_CTRL_SET_TIMEOUT); |
39a66b8d | 402 | } else { |
ff7eb602 | 403 | result = usb_control_msg(serial->dev, |
39a66b8d | 404 | usb_sndctrlpipe(serial->dev, 0), |
32445605 | 405 | request, REQTYPE_HOST_TO_INTERFACE, data[0], |
e2ae67a3 | 406 | port_priv->bInterfaceNumber, NULL, 0, |
2d5733fc | 407 | USB_CTRL_SET_TIMEOUT); |
1da177e4 LT |
408 | } |
409 | ||
39a66b8d CS |
410 | kfree(buf); |
411 | ||
412 | if ((size > 2 && result != size) || result < 0) { | |
660f3b14 GKH |
413 | dev_dbg(&port->dev, "%s - Unable to send request, request=0x%x size=%d result=%d\n", |
414 | __func__, request, size, result); | |
2479e2a9 JH |
415 | if (result > 0) |
416 | result = -EPROTO; | |
417 | ||
418 | return result; | |
39a66b8d | 419 | } |
1da177e4 LT |
420 | |
421 | return 0; | |
422 | } | |
423 | ||
39a66b8d | 424 | /* |
4cc27bd6 CS |
425 | * cp210x_set_config_single |
426 | * Convenience function for calling cp210x_set_config on single data values | |
39a66b8d CS |
427 | * without requiring an integer pointer |
428 | */ | |
4cc27bd6 | 429 | static inline int cp210x_set_config_single(struct usb_serial_port *port, |
39a66b8d CS |
430 | u8 request, unsigned int data) |
431 | { | |
4cc27bd6 | 432 | return cp210x_set_config(port, request, &data, 2); |
39a66b8d CS |
433 | } |
434 | ||
d0bf1ff0 KS |
435 | /* |
436 | * Detect CP2108 GET_LINE_CTL bug and activate workaround. | |
437 | * Write a known good value 0x800, read it back. | |
438 | * If it comes back swapped the bug is detected. | |
439 | * Preserve the original register value. | |
440 | */ | |
441 | static int cp210x_detect_swapped_line_ctl(struct usb_serial_port *port) | |
442 | { | |
443 | struct cp210x_port_private *port_priv = usb_get_serial_port_data(port); | |
444 | unsigned int line_ctl_save; | |
445 | unsigned int line_ctl_test; | |
446 | int err; | |
447 | ||
448 | err = cp210x_get_config(port, CP210X_GET_LINE_CTL, &line_ctl_save, 2); | |
449 | if (err) | |
450 | return err; | |
451 | ||
452 | line_ctl_test = 0x800; | |
453 | err = cp210x_set_config(port, CP210X_SET_LINE_CTL, &line_ctl_test, 2); | |
454 | if (err) | |
455 | return err; | |
456 | ||
457 | err = cp210x_get_config(port, CP210X_GET_LINE_CTL, &line_ctl_test, 2); | |
458 | if (err) | |
459 | return err; | |
460 | ||
461 | if (line_ctl_test == 8) { | |
462 | port_priv->has_swapped_line_ctl = true; | |
463 | line_ctl_save = swab16((u16)line_ctl_save); | |
464 | } | |
465 | ||
466 | return cp210x_set_config(port, CP210X_SET_LINE_CTL, &line_ctl_save, 2); | |
467 | } | |
468 | ||
469 | /* | |
470 | * Must always be called instead of cp210x_get_config(CP210X_GET_LINE_CTL) | |
471 | * to workaround cp2108 bug and get correct value. | |
472 | */ | |
473 | static int cp210x_get_line_ctl(struct usb_serial_port *port, unsigned int *ctl) | |
474 | { | |
475 | struct cp210x_port_private *port_priv = usb_get_serial_port_data(port); | |
476 | int err; | |
477 | ||
478 | err = cp210x_get_config(port, CP210X_GET_LINE_CTL, ctl, 2); | |
479 | if (err) | |
480 | return err; | |
481 | ||
482 | /* Workaround swapped bytes in 16-bit value from CP210X_GET_LINE_CTL */ | |
483 | if (port_priv->has_swapped_line_ctl) | |
484 | *ctl = swab16((u16)(*ctl)); | |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
ef8b6bcb | 489 | /* |
4cc27bd6 | 490 | * cp210x_quantise_baudrate |
ef8b6bcb CS |
491 | * Quantises the baud rate as per AN205 Table 1 |
492 | */ | |
4f2ab888 JH |
493 | static unsigned int cp210x_quantise_baudrate(unsigned int baud) |
494 | { | |
be125d9c JH |
495 | if (baud <= 300) |
496 | baud = 300; | |
ef8b6bcb CS |
497 | else if (baud <= 600) baud = 600; |
498 | else if (baud <= 1200) baud = 1200; | |
499 | else if (baud <= 1800) baud = 1800; | |
500 | else if (baud <= 2400) baud = 2400; | |
501 | else if (baud <= 4000) baud = 4000; | |
502 | else if (baud <= 4803) baud = 4800; | |
503 | else if (baud <= 7207) baud = 7200; | |
504 | else if (baud <= 9612) baud = 9600; | |
505 | else if (baud <= 14428) baud = 14400; | |
506 | else if (baud <= 16062) baud = 16000; | |
507 | else if (baud <= 19250) baud = 19200; | |
508 | else if (baud <= 28912) baud = 28800; | |
509 | else if (baud <= 38601) baud = 38400; | |
510 | else if (baud <= 51558) baud = 51200; | |
511 | else if (baud <= 56280) baud = 56000; | |
512 | else if (baud <= 58053) baud = 57600; | |
513 | else if (baud <= 64111) baud = 64000; | |
514 | else if (baud <= 77608) baud = 76800; | |
515 | else if (baud <= 117028) baud = 115200; | |
516 | else if (baud <= 129347) baud = 128000; | |
517 | else if (baud <= 156868) baud = 153600; | |
518 | else if (baud <= 237832) baud = 230400; | |
519 | else if (baud <= 254234) baud = 250000; | |
520 | else if (baud <= 273066) baud = 256000; | |
521 | else if (baud <= 491520) baud = 460800; | |
522 | else if (baud <= 567138) baud = 500000; | |
523 | else if (baud <= 670254) baud = 576000; | |
d1620ca9 JH |
524 | else if (baud < 1000000) |
525 | baud = 921600; | |
526 | else if (baud > 2000000) | |
527 | baud = 2000000; | |
ef8b6bcb CS |
528 | return baud; |
529 | } | |
530 | ||
a509a7e4 | 531 | static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 532 | { |
1da177e4 LT |
533 | int result; |
534 | ||
2479e2a9 JH |
535 | result = cp210x_set_config_single(port, CP210X_IFC_ENABLE, |
536 | UART_ENABLE); | |
537 | if (result) { | |
538 | dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); | |
539 | return result; | |
1da177e4 LT |
540 | } |
541 | ||
39a66b8d | 542 | /* Configure the termios structure */ |
4cc27bd6 | 543 | cp210x_get_termios(tty, port); |
55b2afbb | 544 | |
cdc32fd6 JH |
545 | /* The baud rate must be initialised on cp2104 */ |
546 | if (tty) | |
547 | cp210x_change_speed(tty, port, NULL); | |
548 | ||
55b2afbb | 549 | return usb_serial_generic_open(tty, port); |
1da177e4 LT |
550 | } |
551 | ||
4cc27bd6 | 552 | static void cp210x_close(struct usb_serial_port *port) |
1da177e4 | 553 | { |
ebfb319b KS |
554 | unsigned int purge_ctl; |
555 | ||
f26788da | 556 | usb_serial_generic_close(port); |
ebfb319b KS |
557 | |
558 | /* Clear both queues; cp2108 needs this to avoid an occasional hang */ | |
559 | purge_ctl = PURGE_ALL; | |
560 | cp210x_set_config(port, CP210X_PURGE, &purge_ctl, 2); | |
561 | ||
ecb9eb80 | 562 | cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); |
1da177e4 LT |
563 | } |
564 | ||
6f923a01 KS |
565 | /* |
566 | * Read how many bytes are waiting in the TX queue. | |
567 | */ | |
568 | static int cp210x_get_tx_queue_byte_count(struct usb_serial_port *port, | |
569 | u32 *count) | |
570 | { | |
571 | struct usb_serial *serial = port->serial; | |
572 | struct cp210x_port_private *port_priv = usb_get_serial_port_data(port); | |
573 | struct cp210x_comm_status *sts; | |
574 | int result; | |
575 | ||
576 | sts = kmalloc(sizeof(*sts), GFP_KERNEL); | |
577 | if (!sts) | |
578 | return -ENOMEM; | |
579 | ||
580 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
581 | CP210X_GET_COMM_STATUS, REQTYPE_INTERFACE_TO_HOST, | |
582 | 0, port_priv->bInterfaceNumber, sts, sizeof(*sts), | |
583 | USB_CTRL_GET_TIMEOUT); | |
584 | if (result == sizeof(*sts)) { | |
585 | *count = le32_to_cpu(sts->ulAmountInOutQueue); | |
586 | result = 0; | |
587 | } else { | |
588 | dev_err(&port->dev, "failed to get comm status: %d\n", result); | |
589 | if (result >= 0) | |
590 | result = -EPROTO; | |
591 | } | |
592 | ||
593 | kfree(sts); | |
594 | ||
595 | return result; | |
596 | } | |
597 | ||
598 | static bool cp210x_tx_empty(struct usb_serial_port *port) | |
599 | { | |
600 | int err; | |
601 | u32 count; | |
602 | ||
603 | err = cp210x_get_tx_queue_byte_count(port, &count); | |
604 | if (err) | |
605 | return true; | |
606 | ||
607 | return !count; | |
608 | } | |
609 | ||
39a66b8d | 610 | /* |
4cc27bd6 | 611 | * cp210x_get_termios |
39a66b8d CS |
612 | * Reads the baud rate, data bits, parity, stop bits and flow control mode |
613 | * from the device, corrects any unsupported values, and configures the | |
614 | * termios structure to reflect the state of the device | |
615 | */ | |
4cc27bd6 | 616 | static void cp210x_get_termios(struct tty_struct *tty, |
d2ad67b3 V |
617 | struct usb_serial_port *port) |
618 | { | |
619 | unsigned int baud; | |
620 | ||
621 | if (tty) { | |
4cc27bd6 | 622 | cp210x_get_termios_port(tty->driver_data, |
adc8d746 | 623 | &tty->termios.c_cflag, &baud); |
d2ad67b3 | 624 | tty_encode_baud_rate(tty, baud, baud); |
4f2ab888 | 625 | } else { |
d2ad67b3 V |
626 | unsigned int cflag; |
627 | cflag = 0; | |
4cc27bd6 | 628 | cp210x_get_termios_port(port, &cflag, &baud); |
d2ad67b3 V |
629 | } |
630 | } | |
631 | ||
632 | /* | |
4cc27bd6 CS |
633 | * cp210x_get_termios_port |
634 | * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
d2ad67b3 | 635 | */ |
4cc27bd6 | 636 | static void cp210x_get_termios_port(struct usb_serial_port *port, |
d2ad67b3 | 637 | unsigned int *cflagp, unsigned int *baudp) |
1da177e4 | 638 | { |
660f3b14 | 639 | struct device *dev = &port->dev; |
39a66b8d | 640 | unsigned int cflag, modem_ctl[4]; |
b2bdd1f5 HH |
641 | unsigned int baud; |
642 | unsigned int bits; | |
1da177e4 | 643 | |
7f482fc8 | 644 | cp210x_get_config(port, CP210X_GET_BAUDRATE, &baud, 4); |
1da177e4 | 645 | |
660f3b14 | 646 | dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); |
d2ad67b3 | 647 | *baudp = baud; |
9ab0f202 | 648 | |
d2ad67b3 | 649 | cflag = *cflagp; |
1da177e4 | 650 | |
d0bf1ff0 | 651 | cp210x_get_line_ctl(port, &bits); |
1da177e4 | 652 | cflag &= ~CSIZE; |
ff7eb602 AC |
653 | switch (bits & BITS_DATA_MASK) { |
654 | case BITS_DATA_5: | |
660f3b14 | 655 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
ff7eb602 AC |
656 | cflag |= CS5; |
657 | break; | |
658 | case BITS_DATA_6: | |
660f3b14 | 659 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
ff7eb602 AC |
660 | cflag |= CS6; |
661 | break; | |
662 | case BITS_DATA_7: | |
660f3b14 | 663 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
ff7eb602 AC |
664 | cflag |= CS7; |
665 | break; | |
666 | case BITS_DATA_8: | |
660f3b14 | 667 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
ff7eb602 AC |
668 | cflag |= CS8; |
669 | break; | |
670 | case BITS_DATA_9: | |
660f3b14 | 671 | dev_dbg(dev, "%s - data bits = 9 (not supported, using 8 data bits)\n", __func__); |
ff7eb602 AC |
672 | cflag |= CS8; |
673 | bits &= ~BITS_DATA_MASK; | |
674 | bits |= BITS_DATA_8; | |
4cc27bd6 | 675 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
676 | break; |
677 | default: | |
660f3b14 | 678 | dev_dbg(dev, "%s - Unknown number of data bits, using 8\n", __func__); |
ff7eb602 AC |
679 | cflag |= CS8; |
680 | bits &= ~BITS_DATA_MASK; | |
681 | bits |= BITS_DATA_8; | |
4cc27bd6 | 682 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 683 | break; |
1da177e4 LT |
684 | } |
685 | ||
ff7eb602 AC |
686 | switch (bits & BITS_PARITY_MASK) { |
687 | case BITS_PARITY_NONE: | |
660f3b14 | 688 | dev_dbg(dev, "%s - parity = NONE\n", __func__); |
ff7eb602 AC |
689 | cflag &= ~PARENB; |
690 | break; | |
691 | case BITS_PARITY_ODD: | |
660f3b14 | 692 | dev_dbg(dev, "%s - parity = ODD\n", __func__); |
ff7eb602 AC |
693 | cflag |= (PARENB|PARODD); |
694 | break; | |
695 | case BITS_PARITY_EVEN: | |
660f3b14 | 696 | dev_dbg(dev, "%s - parity = EVEN\n", __func__); |
ff7eb602 AC |
697 | cflag &= ~PARODD; |
698 | cflag |= PARENB; | |
699 | break; | |
700 | case BITS_PARITY_MARK: | |
660f3b14 | 701 | dev_dbg(dev, "%s - parity = MARK\n", __func__); |
4b6181ca | 702 | cflag |= (PARENB|PARODD|CMSPAR); |
ff7eb602 AC |
703 | break; |
704 | case BITS_PARITY_SPACE: | |
660f3b14 | 705 | dev_dbg(dev, "%s - parity = SPACE\n", __func__); |
4b6181ca RK |
706 | cflag &= ~PARODD; |
707 | cflag |= (PARENB|CMSPAR); | |
ff7eb602 AC |
708 | break; |
709 | default: | |
660f3b14 | 710 | dev_dbg(dev, "%s - Unknown parity mode, disabling parity\n", __func__); |
ff7eb602 AC |
711 | cflag &= ~PARENB; |
712 | bits &= ~BITS_PARITY_MASK; | |
4cc27bd6 | 713 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 714 | break; |
1da177e4 LT |
715 | } |
716 | ||
717 | cflag &= ~CSTOPB; | |
ff7eb602 AC |
718 | switch (bits & BITS_STOP_MASK) { |
719 | case BITS_STOP_1: | |
660f3b14 | 720 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
ff7eb602 AC |
721 | break; |
722 | case BITS_STOP_1_5: | |
660f3b14 | 723 | dev_dbg(dev, "%s - stop bits = 1.5 (not supported, using 1 stop bit)\n", __func__); |
ff7eb602 | 724 | bits &= ~BITS_STOP_MASK; |
4cc27bd6 | 725 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 AC |
726 | break; |
727 | case BITS_STOP_2: | |
660f3b14 | 728 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
ff7eb602 AC |
729 | cflag |= CSTOPB; |
730 | break; | |
731 | default: | |
660f3b14 | 732 | dev_dbg(dev, "%s - Unknown number of stop bits, using 1 stop bit\n", __func__); |
ff7eb602 | 733 | bits &= ~BITS_STOP_MASK; |
4cc27bd6 | 734 | cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); |
ff7eb602 | 735 | break; |
1da177e4 LT |
736 | } |
737 | ||
4cc27bd6 | 738 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
39a66b8d | 739 | if (modem_ctl[0] & 0x0008) { |
660f3b14 | 740 | dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); |
39a66b8d CS |
741 | cflag |= CRTSCTS; |
742 | } else { | |
660f3b14 | 743 | dev_dbg(dev, "%s - flow control = NONE\n", __func__); |
39a66b8d CS |
744 | cflag &= ~CRTSCTS; |
745 | } | |
746 | ||
d2ad67b3 | 747 | *cflagp = cflag; |
1da177e4 LT |
748 | } |
749 | ||
e5990874 JH |
750 | /* |
751 | * CP2101 supports the following baud rates: | |
752 | * | |
753 | * 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800, | |
754 | * 38400, 56000, 57600, 115200, 128000, 230400, 460800, 921600 | |
755 | * | |
756 | * CP2102 and CP2103 support the following additional rates: | |
757 | * | |
758 | * 4000, 16000, 51200, 64000, 76800, 153600, 250000, 256000, 500000, | |
759 | * 576000 | |
760 | * | |
761 | * The device will map a requested rate to a supported one, but the result | |
762 | * of requests for rates greater than 1053257 is undefined (see AN205). | |
763 | * | |
764 | * CP2104, CP2105 and CP2110 support most rates up to 2M, 921k and 1M baud, | |
765 | * respectively, with an error less than 1%. The actual rates are determined | |
766 | * by | |
767 | * | |
768 | * div = round(freq / (2 x prescale x request)) | |
769 | * actual = freq / (2 x prescale x div) | |
770 | * | |
771 | * For CP2104 and CP2105 freq is 48Mhz and prescale is 4 for request <= 365bps | |
772 | * or 1 otherwise. | |
773 | * For CP2110 freq is 24Mhz and prescale is 4 for request <= 300bps or 1 | |
774 | * otherwise. | |
775 | */ | |
776 | static void cp210x_change_speed(struct tty_struct *tty, | |
777 | struct usb_serial_port *port, struct ktermios *old_termios) | |
778 | { | |
779 | u32 baud; | |
780 | ||
adc8d746 | 781 | baud = tty->termios.c_ospeed; |
e5990874 | 782 | |
d1620ca9 JH |
783 | /* This maps the requested rate to a rate valid on cp2102 or cp2103, |
784 | * or to an arbitrary rate in [1M,2M]. | |
e5990874 JH |
785 | * |
786 | * NOTE: B0 is not implemented. | |
787 | */ | |
788 | baud = cp210x_quantise_baudrate(baud); | |
789 | ||
660f3b14 | 790 | dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud); |
e5990874 JH |
791 | if (cp210x_set_config(port, CP210X_SET_BAUDRATE, &baud, |
792 | sizeof(baud))) { | |
793 | dev_warn(&port->dev, "failed to set baud rate to %u\n", baud); | |
794 | if (old_termios) | |
795 | baud = old_termios->c_ospeed; | |
796 | else | |
797 | baud = 9600; | |
798 | } | |
799 | ||
800 | tty_encode_baud_rate(tty, baud, baud); | |
801 | } | |
802 | ||
4cc27bd6 | 803 | static void cp210x_set_termios(struct tty_struct *tty, |
95da310e | 804 | struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 805 | { |
660f3b14 | 806 | struct device *dev = &port->dev; |
9ab0f202 | 807 | unsigned int cflag, old_cflag; |
34b76fca | 808 | unsigned int bits; |
39a66b8d | 809 | unsigned int modem_ctl[4]; |
1da177e4 | 810 | |
adc8d746 | 811 | cflag = tty->termios.c_cflag; |
01e96d28 | 812 | old_cflag = old_termios->c_cflag; |
e5990874 | 813 | |
adc8d746 | 814 | if (tty->termios.c_ospeed != old_termios->c_ospeed) |
e5990874 | 815 | cp210x_change_speed(tty, port, old_termios); |
1da177e4 | 816 | |
39a66b8d | 817 | /* If the number of data bits is to be updated */ |
1da177e4 | 818 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
d0bf1ff0 | 819 | cp210x_get_line_ctl(port, &bits); |
1da177e4 LT |
820 | bits &= ~BITS_DATA_MASK; |
821 | switch (cflag & CSIZE) { | |
ff7eb602 AC |
822 | case CS5: |
823 | bits |= BITS_DATA_5; | |
660f3b14 | 824 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
ff7eb602 AC |
825 | break; |
826 | case CS6: | |
827 | bits |= BITS_DATA_6; | |
660f3b14 | 828 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
ff7eb602 AC |
829 | break; |
830 | case CS7: | |
831 | bits |= BITS_DATA_7; | |
660f3b14 | 832 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
ff7eb602 AC |
833 | break; |
834 | case CS8: | |
835 | bits |= BITS_DATA_8; | |
660f3b14 | 836 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
ff7eb602 AC |
837 | break; |
838 | /*case CS9: | |
839 | bits |= BITS_DATA_9; | |
660f3b14 | 840 | dev_dbg(dev, "%s - data bits = 9\n", __func__); |
ff7eb602 AC |
841 | break;*/ |
842 | default: | |
660f3b14 | 843 | dev_dbg(dev, "cp210x driver does not support the number of bits requested, using 8 bit mode\n"); |
4f2ab888 JH |
844 | bits |= BITS_DATA_8; |
845 | break; | |
1da177e4 | 846 | } |
4cc27bd6 | 847 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 848 | dev_dbg(dev, "Number of data bits requested not supported by device\n"); |
1da177e4 LT |
849 | } |
850 | ||
4b6181ca RK |
851 | if ((cflag & (PARENB|PARODD|CMSPAR)) != |
852 | (old_cflag & (PARENB|PARODD|CMSPAR))) { | |
d0bf1ff0 | 853 | cp210x_get_line_ctl(port, &bits); |
1da177e4 LT |
854 | bits &= ~BITS_PARITY_MASK; |
855 | if (cflag & PARENB) { | |
4b6181ca | 856 | if (cflag & CMSPAR) { |
660f3b14 GKH |
857 | if (cflag & PARODD) { |
858 | bits |= BITS_PARITY_MARK; | |
859 | dev_dbg(dev, "%s - parity = MARK\n", __func__); | |
860 | } else { | |
861 | bits |= BITS_PARITY_SPACE; | |
862 | dev_dbg(dev, "%s - parity = SPACE\n", __func__); | |
863 | } | |
1da177e4 | 864 | } else { |
660f3b14 GKH |
865 | if (cflag & PARODD) { |
866 | bits |= BITS_PARITY_ODD; | |
867 | dev_dbg(dev, "%s - parity = ODD\n", __func__); | |
868 | } else { | |
869 | bits |= BITS_PARITY_EVEN; | |
870 | dev_dbg(dev, "%s - parity = EVEN\n", __func__); | |
871 | } | |
1da177e4 LT |
872 | } |
873 | } | |
4cc27bd6 | 874 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 875 | dev_dbg(dev, "Parity mode not supported by device\n"); |
1da177e4 LT |
876 | } |
877 | ||
878 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
d0bf1ff0 | 879 | cp210x_get_line_ctl(port, &bits); |
1da177e4 LT |
880 | bits &= ~BITS_STOP_MASK; |
881 | if (cflag & CSTOPB) { | |
882 | bits |= BITS_STOP_2; | |
660f3b14 | 883 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
1da177e4 LT |
884 | } else { |
885 | bits |= BITS_STOP_1; | |
660f3b14 | 886 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
1da177e4 | 887 | } |
4cc27bd6 | 888 | if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) |
660f3b14 | 889 | dev_dbg(dev, "Number of stop bits requested not supported by device\n"); |
1da177e4 | 890 | } |
39a66b8d CS |
891 | |
892 | if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
4cc27bd6 | 893 | cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); |
660f3b14 GKH |
894 | dev_dbg(dev, "%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
895 | __func__, modem_ctl[0], modem_ctl[1], | |
896 | modem_ctl[2], modem_ctl[3]); | |
39a66b8d CS |
897 | |
898 | if (cflag & CRTSCTS) { | |
899 | modem_ctl[0] &= ~0x7B; | |
900 | modem_ctl[0] |= 0x09; | |
901 | modem_ctl[1] = 0x80; | |
660f3b14 | 902 | dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); |
39a66b8d CS |
903 | } else { |
904 | modem_ctl[0] &= ~0x7B; | |
905 | modem_ctl[0] |= 0x01; | |
906 | modem_ctl[1] |= 0x40; | |
660f3b14 | 907 | dev_dbg(dev, "%s - flow control = NONE\n", __func__); |
39a66b8d CS |
908 | } |
909 | ||
660f3b14 GKH |
910 | dev_dbg(dev, "%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n", |
911 | __func__, modem_ctl[0], modem_ctl[1], | |
912 | modem_ctl[2], modem_ctl[3]); | |
4cc27bd6 | 913 | cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); |
39a66b8d CS |
914 | } |
915 | ||
916 | } | |
917 | ||
4f2ab888 | 918 | static int cp210x_tiocmset(struct tty_struct *tty, |
39a66b8d CS |
919 | unsigned int set, unsigned int clear) |
920 | { | |
95da310e | 921 | struct usb_serial_port *port = tty->driver_data; |
20b9d177 | 922 | return cp210x_tiocmset_port(port, set, clear); |
d2ad67b3 V |
923 | } |
924 | ||
20b9d177 | 925 | static int cp210x_tiocmset_port(struct usb_serial_port *port, |
d2ad67b3 V |
926 | unsigned int set, unsigned int clear) |
927 | { | |
b2bdd1f5 | 928 | unsigned int control = 0; |
39a66b8d | 929 | |
39a66b8d CS |
930 | if (set & TIOCM_RTS) { |
931 | control |= CONTROL_RTS; | |
932 | control |= CONTROL_WRITE_RTS; | |
933 | } | |
934 | if (set & TIOCM_DTR) { | |
935 | control |= CONTROL_DTR; | |
936 | control |= CONTROL_WRITE_DTR; | |
937 | } | |
938 | if (clear & TIOCM_RTS) { | |
939 | control &= ~CONTROL_RTS; | |
940 | control |= CONTROL_WRITE_RTS; | |
941 | } | |
942 | if (clear & TIOCM_DTR) { | |
943 | control &= ~CONTROL_DTR; | |
944 | control |= CONTROL_WRITE_DTR; | |
945 | } | |
946 | ||
660f3b14 | 947 | dev_dbg(&port->dev, "%s - control = 0x%.4x\n", __func__, control); |
39a66b8d | 948 | |
4cc27bd6 | 949 | return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); |
39a66b8d CS |
950 | } |
951 | ||
d94c7bd4 AC |
952 | static void cp210x_dtr_rts(struct usb_serial_port *p, int on) |
953 | { | |
954 | if (on) | |
20b9d177 | 955 | cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0); |
d94c7bd4 | 956 | else |
20b9d177 | 957 | cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS); |
d94c7bd4 AC |
958 | } |
959 | ||
4f2ab888 | 960 | static int cp210x_tiocmget(struct tty_struct *tty) |
39a66b8d | 961 | { |
95da310e | 962 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 HH |
963 | unsigned int control; |
964 | int result; | |
39a66b8d | 965 | |
4cc27bd6 | 966 | cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); |
39a66b8d CS |
967 | |
968 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
969 | |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
970 | |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
971 | |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
972 | |((control & CONTROL_RING)? TIOCM_RI : 0) | |
973 | |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
974 | ||
660f3b14 | 975 | dev_dbg(&port->dev, "%s - control = 0x%.2x\n", __func__, control); |
39a66b8d CS |
976 | |
977 | return result; | |
1da177e4 LT |
978 | } |
979 | ||
4f2ab888 | 980 | static void cp210x_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 981 | { |
95da310e | 982 | struct usb_serial_port *port = tty->driver_data; |
b2bdd1f5 | 983 | unsigned int state; |
1da177e4 | 984 | |
1da177e4 LT |
985 | if (break_state == 0) |
986 | state = BREAK_OFF; | |
987 | else | |
988 | state = BREAK_ON; | |
660f3b14 GKH |
989 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
990 | state == BREAK_OFF ? "off" : "on"); | |
4cc27bd6 | 991 | cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); |
1da177e4 LT |
992 | } |
993 | ||
e2ae67a3 | 994 | static int cp210x_port_probe(struct usb_serial_port *port) |
1da177e4 | 995 | { |
e2ae67a3 | 996 | struct usb_serial *serial = port->serial; |
4295fe77 | 997 | struct usb_host_interface *cur_altsetting; |
e2ae67a3 | 998 | struct cp210x_port_private *port_priv; |
d0bf1ff0 | 999 | int ret; |
a5360a53 | 1000 | |
e2ae67a3 KS |
1001 | port_priv = kzalloc(sizeof(*port_priv), GFP_KERNEL); |
1002 | if (!port_priv) | |
4295fe77 | 1003 | return -ENOMEM; |
a5360a53 | 1004 | |
4295fe77 | 1005 | cur_altsetting = serial->interface->cur_altsetting; |
e2ae67a3 | 1006 | port_priv->bInterfaceNumber = cur_altsetting->desc.bInterfaceNumber; |
a5360a53 | 1007 | |
e2ae67a3 | 1008 | usb_set_serial_port_data(port, port_priv); |
a5360a53 | 1009 | |
d0bf1ff0 KS |
1010 | ret = cp210x_detect_swapped_line_ctl(port); |
1011 | if (ret) { | |
1012 | kfree(port_priv); | |
1013 | return ret; | |
1014 | } | |
a5360a53 | 1015 | |
1da177e4 LT |
1016 | return 0; |
1017 | } | |
1018 | ||
e2ae67a3 | 1019 | static int cp210x_port_remove(struct usb_serial_port *port) |
a5360a53 | 1020 | { |
e2ae67a3 KS |
1021 | struct cp210x_port_private *port_priv; |
1022 | ||
1023 | port_priv = usb_get_serial_port_data(port); | |
1024 | kfree(port_priv); | |
a5360a53 | 1025 | |
e2ae67a3 | 1026 | return 0; |
a5360a53 PF |
1027 | } |
1028 | ||
68e24113 | 1029 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
1030 | |
1031 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 1032 | MODULE_LICENSE("GPL"); |