| /* | |
| * Silicon Laboratories CP210x USB to RS232 serial adaptor driver | |
| * | |
| * Copyright (C) 2005 Craig Shelley (craig@microtron.org.uk) | |
| * | |
| * This program is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU General Public License version | |
| * 2 as published by the Free Software Foundation. | |
| * | |
| * Support to set flow control line levels using TIOCMGET and TIOCMSET | |
| * thanks to Karl Hiramoto karl@hiramoto.org. RTSCTS hardware flow | |
| * control thanks to Munir Nassar nassarmu@real-time.com | |
| * | |
| */ | |
| #include <linux/kernel.h> | |
| #include <linux/errno.h> | |
| #include <linux/slab.h> | |
| #include <linux/tty.h> | |
| #include <linux/tty_flip.h> | |
| #include <linux/module.h> | |
| #include <linux/moduleparam.h> | |
| #include <linux/usb.h> | |
| #include <linux/uaccess.h> | |
| #include <linux/usb/serial.h> | |
| /* | |
| * Version Information | |
| */ | |
| #define DRIVER_VERSION "v0.09" | |
| #define DRIVER_DESC "Silicon Labs CP210x RS232 serial adaptor driver" | |
| /* | |
| * Function Prototypes | |
| */ | |
| static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *); | |
| static void cp210x_close(struct usb_serial_port *); | |
| static void cp210x_get_termios(struct tty_struct *, | |
| struct usb_serial_port *port); | |
| static void cp210x_get_termios_port(struct usb_serial_port *port, | |
| unsigned int *cflagp, unsigned int *baudp); | |
| static void cp210x_change_speed(struct tty_struct *, struct usb_serial_port *, | |
| struct ktermios *); | |
| static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *, | |
| struct ktermios*); | |
| static int cp210x_tiocmget(struct tty_struct *); | |
| static int cp210x_tiocmset(struct tty_struct *, unsigned int, unsigned int); | |
| static int cp210x_tiocmset_port(struct usb_serial_port *port, | |
| unsigned int, unsigned int); | |
| static void cp210x_break_ctl(struct tty_struct *, int); | |
| static int cp210x_startup(struct usb_serial *); | |
| static void cp210x_release(struct usb_serial *); | |
| static void cp210x_dtr_rts(struct usb_serial_port *p, int on); | |
| static int debug; | |
| static const struct usb_device_id id_table[] = { | |
| { USB_DEVICE(0x045B, 0x0053) }, /* Renesas RX610 RX-Stick */ | |
| { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ | |
| { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ | |
| { USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ | |
| { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ | |
| { USB_DEVICE(0x0846, 0x1100) }, /* NetGear Managed Switch M4100 series, M5300 series, M7100 series */ | |
| { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ | |
| { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ | |
| { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */ | |
| { USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */ | |
| { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ | |
| { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ | |
| { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ | |
| { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ | |
| { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ | |
| { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ | |
| { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */ | |
| { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */ | |
| { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ | |
| { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ | |
| { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ | |
| { USB_DEVICE(0x10C4, 0x8044) }, /* Cygnal Debug Adapter */ | |
| { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */ | |
| { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ | |
| { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ | |
| { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ | |
| { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */ | |
| { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ | |
| { USB_DEVICE(0x10C4, 0x80C4) }, /* Cygnal Integrated Products, Inc., Optris infrared thermometer */ | |
| { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ | |
| { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ | |
| { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ | |
| { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ | |
| { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ | |
| { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */ | |
| { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ | |
| { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ | |
| { USB_DEVICE(0x2405, 0x0003) }, /* West Mountain Radio RIGblaster Advantage */ | |
| { USB_DEVICE(0x10C4, 0x8156) }, /* B&G H3000 link cable */ | |
| { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ | |
| { USB_DEVICE(0x10C4, 0x815F) }, /* Timewave HamLinkUSB */ | |
| { USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */ | |
| { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ | |
| { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ | |
| { USB_DEVICE(0x10C4, 0x81A9) }, /* Multiplex RC Interface */ | |
| { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ | |
| { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */ | |
| { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ | |
| { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ | |
| { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ | |
| { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */ | |
| { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ | |
| { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ | |
| { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ | |
| { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demonstration module */ | |
| { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */ | |
| { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ | |
| { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ | |
| { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */ | |
| { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ | |
| { USB_DEVICE(0x10C4, 0x83D8) }, /* DekTec DTA Plus VHF/UHF Booster/Attenuator */ | |
| { USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */ | |
| { USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */ | |
| { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ | |
| { USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */ | |
| { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */ | |
| { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */ | |
| { USB_DEVICE(0x10C4, 0x85F8) }, /* Virtenio Preon32 */ | |
| { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */ | |
| { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */ | |
| { USB_DEVICE(0x10C4, 0x88A4) }, /* MMB Networks ZigBee USB Device */ | |
| { USB_DEVICE(0x10C4, 0x88A5) }, /* Planet Innovation Ingeni ZigBee USB Device */ | |
| { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ | |
| { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ | |
| { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */ | |
| { USB_DEVICE(0x10C4, 0xEA80) }, /* Silicon Labs factory default */ | |
| { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */ | |
| { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ | |
| { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ | |
| { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ | |
| { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ | |
| { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ | |
| { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ | |
| { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ | |
| { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ | |
| { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */ | |
| { USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */ | |
| { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ | |
| { USB_DEVICE(0x166A, 0x0304) }, /* Clipsal 5000CT2 C-Bus Black and White Touchscreen */ | |
| { USB_DEVICE(0x166A, 0x0305) }, /* Clipsal C-5000CT2 C-Bus Spectrum Colour Touchscreen */ | |
| { USB_DEVICE(0x166A, 0x0401) }, /* Clipsal L51xx C-Bus Architectural Dimmer */ | |
| { USB_DEVICE(0x166A, 0x0101) }, /* Clipsal 5560884 C-Bus Multi-room Audio Matrix Switcher */ | |
| { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ | |
| { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */ | |
| { USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */ | |
| { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */ | |
| { USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */ | |
| { USB_DEVICE(0x17A8, 0x0001) }, /* Kamstrup Optical Eye/3-wire */ | |
| { USB_DEVICE(0x17A8, 0x0005) }, /* Kamstrup M-Bus Master MultiPort 250D */ | |
| { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ | |
| { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ | |
| { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ | |
| { USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */ | |
| { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */ | |
| { USB_DEVICE(0x1E29, 0x0102) }, /* Festo CPX-USB */ | |
| { USB_DEVICE(0x1E29, 0x0501) }, /* Festo CMSP */ | |
| { USB_DEVICE(0x1FB9, 0x0100) }, /* Lake Shore Model 121 Current Source */ | |
| { USB_DEVICE(0x1FB9, 0x0200) }, /* Lake Shore Model 218A Temperature Monitor */ | |
| { USB_DEVICE(0x1FB9, 0x0201) }, /* Lake Shore Model 219 Temperature Monitor */ | |
| { USB_DEVICE(0x1FB9, 0x0202) }, /* Lake Shore Model 233 Temperature Transmitter */ | |
| { USB_DEVICE(0x1FB9, 0x0203) }, /* Lake Shore Model 235 Temperature Transmitter */ | |
| { USB_DEVICE(0x1FB9, 0x0300) }, /* Lake Shore Model 335 Temperature Controller */ | |
| { USB_DEVICE(0x1FB9, 0x0301) }, /* Lake Shore Model 336 Temperature Controller */ | |
| { USB_DEVICE(0x1FB9, 0x0302) }, /* Lake Shore Model 350 Temperature Controller */ | |
| { USB_DEVICE(0x1FB9, 0x0303) }, /* Lake Shore Model 371 AC Bridge */ | |
| { USB_DEVICE(0x1FB9, 0x0400) }, /* Lake Shore Model 411 Handheld Gaussmeter */ | |
| { USB_DEVICE(0x1FB9, 0x0401) }, /* Lake Shore Model 425 Gaussmeter */ | |
| { USB_DEVICE(0x1FB9, 0x0402) }, /* Lake Shore Model 455A Gaussmeter */ | |
| { USB_DEVICE(0x1FB9, 0x0403) }, /* Lake Shore Model 475A Gaussmeter */ | |
| { USB_DEVICE(0x1FB9, 0x0404) }, /* Lake Shore Model 465 Three Axis Gaussmeter */ | |
| { USB_DEVICE(0x1FB9, 0x0600) }, /* Lake Shore Model 625A Superconducting MPS */ | |
| { USB_DEVICE(0x1FB9, 0x0601) }, /* Lake Shore Model 642A Magnet Power Supply */ | |
| { USB_DEVICE(0x1FB9, 0x0602) }, /* Lake Shore Model 648 Magnet Power Supply */ | |
| { USB_DEVICE(0x1FB9, 0x0700) }, /* Lake Shore Model 737 VSM Controller */ | |
| { USB_DEVICE(0x1FB9, 0x0701) }, /* Lake Shore Model 776 Hall Matrix */ | |
| { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */ | |
| { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */ | |
| { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */ | |
| { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ | |
| { } /* Terminating Entry */ | |
| }; | |
| MODULE_DEVICE_TABLE(usb, id_table); | |
| struct cp210x_port_private { | |
| __u8 bInterfaceNumber; | |
| }; | |
| static struct usb_driver cp210x_driver = { | |
| .name = "cp210x", | |
| .probe = usb_serial_probe, | |
| .disconnect = usb_serial_disconnect, | |
| .id_table = id_table, | |
| .no_dynamic_id = 1, | |
| }; | |
| static struct usb_serial_driver cp210x_device = { | |
| .driver = { | |
| .owner = THIS_MODULE, | |
| .name = "cp210x", | |
| }, | |
| .usb_driver = &cp210x_driver, | |
| .id_table = id_table, | |
| .num_ports = 1, | |
| .bulk_in_size = 256, | |
| .bulk_out_size = 256, | |
| .open = cp210x_open, | |
| .close = cp210x_close, | |
| .break_ctl = cp210x_break_ctl, | |
| .set_termios = cp210x_set_termios, | |
| .tiocmget = cp210x_tiocmget, | |
| .tiocmset = cp210x_tiocmset, | |
| .attach = cp210x_startup, | |
| .release = cp210x_release, | |
| .dtr_rts = cp210x_dtr_rts | |
| }; | |
| /* Config request types */ | |
| #define REQTYPE_HOST_TO_DEVICE 0x41 | |
| #define REQTYPE_DEVICE_TO_HOST 0xc1 | |
| /* Config request codes */ | |
| #define CP210X_IFC_ENABLE 0x00 | |
| #define CP210X_SET_BAUDDIV 0x01 | |
| #define CP210X_GET_BAUDDIV 0x02 | |
| #define CP210X_SET_LINE_CTL 0x03 | |
| #define CP210X_GET_LINE_CTL 0x04 | |
| #define CP210X_SET_BREAK 0x05 | |
| #define CP210X_IMM_CHAR 0x06 | |
| #define CP210X_SET_MHS 0x07 | |
| #define CP210X_GET_MDMSTS 0x08 | |
| #define CP210X_SET_XON 0x09 | |
| #define CP210X_SET_XOFF 0x0A | |
| #define CP210X_SET_EVENTMASK 0x0B | |
| #define CP210X_GET_EVENTMASK 0x0C | |
| #define CP210X_SET_CHAR 0x0D | |
| #define CP210X_GET_CHARS 0x0E | |
| #define CP210X_GET_PROPS 0x0F | |
| #define CP210X_GET_COMM_STATUS 0x10 | |
| #define CP210X_RESET 0x11 | |
| #define CP210X_PURGE 0x12 | |
| #define CP210X_SET_FLOW 0x13 | |
| #define CP210X_GET_FLOW 0x14 | |
| #define CP210X_EMBED_EVENTS 0x15 | |
| #define CP210X_GET_EVENTSTATE 0x16 | |
| #define CP210X_SET_CHARS 0x19 | |
| #define CP210X_GET_BAUDRATE 0x1D | |
| #define CP210X_SET_BAUDRATE 0x1E | |
| /* CP210X_IFC_ENABLE */ | |
| #define UART_ENABLE 0x0001 | |
| #define UART_DISABLE 0x0000 | |
| /* CP210X_(SET|GET)_BAUDDIV */ | |
| #define BAUD_RATE_GEN_FREQ 0x384000 | |
| /* CP210X_(SET|GET)_LINE_CTL */ | |
| #define BITS_DATA_MASK 0X0f00 | |
| #define BITS_DATA_5 0X0500 | |
| #define BITS_DATA_6 0X0600 | |
| #define BITS_DATA_7 0X0700 | |
| #define BITS_DATA_8 0X0800 | |
| #define BITS_DATA_9 0X0900 | |
| #define BITS_PARITY_MASK 0x00f0 | |
| #define BITS_PARITY_NONE 0x0000 | |
| #define BITS_PARITY_ODD 0x0010 | |
| #define BITS_PARITY_EVEN 0x0020 | |
| #define BITS_PARITY_MARK 0x0030 | |
| #define BITS_PARITY_SPACE 0x0040 | |
| #define BITS_STOP_MASK 0x000f | |
| #define BITS_STOP_1 0x0000 | |
| #define BITS_STOP_1_5 0x0001 | |
| #define BITS_STOP_2 0x0002 | |
| /* CP210X_SET_BREAK */ | |
| #define BREAK_ON 0x0001 | |
| #define BREAK_OFF 0x0000 | |
| /* CP210X_(SET_MHS|GET_MDMSTS) */ | |
| #define CONTROL_DTR 0x0001 | |
| #define CONTROL_RTS 0x0002 | |
| #define CONTROL_CTS 0x0010 | |
| #define CONTROL_DSR 0x0020 | |
| #define CONTROL_RING 0x0040 | |
| #define CONTROL_DCD 0x0080 | |
| #define CONTROL_WRITE_DTR 0x0100 | |
| #define CONTROL_WRITE_RTS 0x0200 | |
| /* | |
| * cp210x_get_config | |
| * Reads from the CP210x configuration registers | |
| * 'size' is specified in bytes. | |
| * 'data' is a pointer to a pre-allocated array of integers large | |
| * enough to hold 'size' bytes (with 4 bytes to each integer) | |
| */ | |
| static int cp210x_get_config(struct usb_serial_port *port, u8 request, | |
| unsigned int *data, int size) | |
| { | |
| struct usb_serial *serial = port->serial; | |
| struct cp210x_port_private *port_priv = usb_get_serial_port_data(port); | |
| __le32 *buf; | |
| int result, i, length; | |
| /* Number of integers required to contain the array */ | |
| length = (((size - 1) | 3) + 1)/4; | |
| buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); | |
| if (!buf) { | |
| dev_err(&port->dev, "%s - out of memory.\n", __func__); | |
| return -ENOMEM; | |
| } | |
| /* Issue the request, attempting to read 'size' bytes */ | |
| result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
| request, REQTYPE_DEVICE_TO_HOST, 0x0000, | |
| port_priv->bInterfaceNumber, buf, size, | |
| USB_CTRL_GET_TIMEOUT); | |
| /* Convert data into an array of integers */ | |
| for (i = 0; i < length; i++) | |
| data[i] = le32_to_cpu(buf[i]); | |
| kfree(buf); | |
| if (result != size) { | |
| dbg("%s - Unable to send config request, " | |
| "request=0x%x size=%d result=%d\n", | |
| __func__, request, size, result); | |
| return -EPROTO; | |
| } | |
| return 0; | |
| } | |
| /* | |
| * cp210x_set_config | |
| * Writes to the CP210x configuration registers | |
| * Values less than 16 bits wide are sent directly | |
| * 'size' is specified in bytes. | |
| */ | |
| static int cp210x_set_config(struct usb_serial_port *port, u8 request, | |
| unsigned int *data, int size) | |
| { | |
| struct usb_serial *serial = port->serial; | |
| struct cp210x_port_private *port_priv = usb_get_serial_port_data(port); | |
| __le32 *buf; | |
| int result, i, length; | |
| /* Number of integers required to contain the array */ | |
| length = (((size - 1) | 3) + 1)/4; | |
| buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); | |
| if (!buf) { | |
| dev_err(&port->dev, "%s - out of memory.\n", | |
| __func__); | |
| return -ENOMEM; | |
| } | |
| /* Array of integers into bytes */ | |
| for (i = 0; i < length; i++) | |
| buf[i] = cpu_to_le32(data[i]); | |
| if (size > 2) { | |
| result = usb_control_msg(serial->dev, | |
| usb_sndctrlpipe(serial->dev, 0), | |
| request, REQTYPE_HOST_TO_DEVICE, 0x0000, | |
| port_priv->bInterfaceNumber, buf, size, | |
| USB_CTRL_SET_TIMEOUT); | |
| } else { | |
| result = usb_control_msg(serial->dev, | |
| usb_sndctrlpipe(serial->dev, 0), | |
| request, REQTYPE_HOST_TO_DEVICE, data[0], | |
| port_priv->bInterfaceNumber, NULL, 0, | |
| USB_CTRL_SET_TIMEOUT); | |
| } | |
| kfree(buf); | |
| if ((size > 2 && result != size) || result < 0) { | |
| dbg("%s - Unable to send request, " | |
| "request=0x%x size=%d result=%d\n", | |
| __func__, request, size, result); | |
| return -EPROTO; | |
| } | |
| return 0; | |
| } | |
| /* | |
| * cp210x_set_config_single | |
| * Convenience function for calling cp210x_set_config on single data values | |
| * without requiring an integer pointer | |
| */ | |
| static inline int cp210x_set_config_single(struct usb_serial_port *port, | |
| u8 request, unsigned int data) | |
| { | |
| return cp210x_set_config(port, request, &data, 2); | |
| } | |
| /* | |
| * cp210x_quantise_baudrate | |
| * Quantises the baud rate as per AN205 Table 1 | |
| */ | |
| static unsigned int cp210x_quantise_baudrate(unsigned int baud) { | |
| if (baud <= 300) | |
| baud = 300; | |
| else if (baud <= 600) baud = 600; | |
| else if (baud <= 1200) baud = 1200; | |
| else if (baud <= 1800) baud = 1800; | |
| else if (baud <= 2400) baud = 2400; | |
| else if (baud <= 4000) baud = 4000; | |
| else if (baud <= 4803) baud = 4800; | |
| else if (baud <= 7207) baud = 7200; | |
| else if (baud <= 9612) baud = 9600; | |
| else if (baud <= 14428) baud = 14400; | |
| else if (baud <= 16062) baud = 16000; | |
| else if (baud <= 19250) baud = 19200; | |
| else if (baud <= 28912) baud = 28800; | |
| else if (baud <= 38601) baud = 38400; | |
| else if (baud <= 51558) baud = 51200; | |
| else if (baud <= 56280) baud = 56000; | |
| else if (baud <= 58053) baud = 57600; | |
| else if (baud <= 64111) baud = 64000; | |
| else if (baud <= 77608) baud = 76800; | |
| else if (baud <= 117028) baud = 115200; | |
| else if (baud <= 129347) baud = 128000; | |
| else if (baud <= 156868) baud = 153600; | |
| else if (baud <= 237832) baud = 230400; | |
| else if (baud <= 254234) baud = 250000; | |
| else if (baud <= 273066) baud = 256000; | |
| else if (baud <= 491520) baud = 460800; | |
| else if (baud <= 567138) baud = 500000; | |
| else if (baud <= 670254) baud = 576000; | |
| else if (baud < 1000000) | |
| baud = 921600; | |
| else if (baud > 2000000) | |
| baud = 2000000; | |
| return baud; | |
| } | |
| static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) | |
| { | |
| dbg("%s - port %d", __func__, port->number); | |
| if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) { | |
| dev_err(&port->dev, "%s - Unable to enable UART\n", | |
| __func__); | |
| return -EPROTO; | |
| } | |
| /* Configure the termios structure */ | |
| cp210x_get_termios(tty, port); | |
| /* The baud rate must be initialised on cp2104 */ | |
| if (tty) | |
| cp210x_change_speed(tty, port, NULL); | |
| return usb_serial_generic_open(tty, port); | |
| } | |
| static void cp210x_close(struct usb_serial_port *port) | |
| { | |
| dbg("%s - port %d", __func__, port->number); | |
| usb_serial_generic_close(port); | |
| mutex_lock(&port->serial->disc_mutex); | |
| if (!port->serial->disconnected) | |
| cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); | |
| mutex_unlock(&port->serial->disc_mutex); | |
| } | |
| /* | |
| * cp210x_get_termios | |
| * Reads the baud rate, data bits, parity, stop bits and flow control mode | |
| * from the device, corrects any unsupported values, and configures the | |
| * termios structure to reflect the state of the device | |
| */ | |
| static void cp210x_get_termios(struct tty_struct *tty, | |
| struct usb_serial_port *port) | |
| { | |
| unsigned int baud; | |
| if (tty) { | |
| cp210x_get_termios_port(tty->driver_data, | |
| &tty->termios->c_cflag, &baud); | |
| tty_encode_baud_rate(tty, baud, baud); | |
| } | |
| else { | |
| unsigned int cflag; | |
| cflag = 0; | |
| cp210x_get_termios_port(port, &cflag, &baud); | |
| } | |
| } | |
| /* | |
| * cp210x_get_termios_port | |
| * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. | |
| */ | |
| static void cp210x_get_termios_port(struct usb_serial_port *port, | |
| unsigned int *cflagp, unsigned int *baudp) | |
| { | |
| unsigned int cflag, modem_ctl[4]; | |
| unsigned int baud; | |
| unsigned int bits; | |
| dbg("%s - port %d", __func__, port->number); | |
| cp210x_get_config(port, CP210X_GET_BAUDRATE, &baud, 4); | |
| dbg("%s - baud rate = %d", __func__, baud); | |
| *baudp = baud; | |
| cflag = *cflagp; | |
| cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); | |
| cflag &= ~CSIZE; | |
| switch (bits & BITS_DATA_MASK) { | |
| case BITS_DATA_5: | |
| dbg("%s - data bits = 5", __func__); | |
| cflag |= CS5; | |
| break; | |
| case BITS_DATA_6: | |
| dbg("%s - data bits = 6", __func__); | |
| cflag |= CS6; | |
| break; | |
| case BITS_DATA_7: | |
| dbg("%s - data bits = 7", __func__); | |
| cflag |= CS7; | |
| break; | |
| case BITS_DATA_8: | |
| dbg("%s - data bits = 8", __func__); | |
| cflag |= CS8; | |
| break; | |
| case BITS_DATA_9: | |
| dbg("%s - data bits = 9 (not supported, using 8 data bits)", | |
| __func__); | |
| cflag |= CS8; | |
| bits &= ~BITS_DATA_MASK; | |
| bits |= BITS_DATA_8; | |
| cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); | |
| break; | |
| default: | |
| dbg("%s - Unknown number of data bits, using 8", __func__); | |
| cflag |= CS8; | |
| bits &= ~BITS_DATA_MASK; | |
| bits |= BITS_DATA_8; | |
| cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); | |
| break; | |
| } | |
| switch (bits & BITS_PARITY_MASK) { | |
| case BITS_PARITY_NONE: | |
| dbg("%s - parity = NONE", __func__); | |
| cflag &= ~PARENB; | |
| break; | |
| case BITS_PARITY_ODD: | |
| dbg("%s - parity = ODD", __func__); | |
| cflag |= (PARENB|PARODD); | |
| break; | |
| case BITS_PARITY_EVEN: | |
| dbg("%s - parity = EVEN", __func__); | |
| cflag &= ~PARODD; | |
| cflag |= PARENB; | |
| break; | |
| case BITS_PARITY_MARK: | |
| dbg("%s - parity = MARK (not supported, disabling parity)", | |
| __func__); | |
| cflag &= ~PARENB; | |
| bits &= ~BITS_PARITY_MASK; | |
| cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); | |
| break; | |
| case BITS_PARITY_SPACE: | |
| dbg("%s - parity = SPACE (not supported, disabling parity)", | |
| __func__); | |
| cflag &= ~PARENB; | |
| bits &= ~BITS_PARITY_MASK; | |
| cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); | |
| break; | |
| default: | |
| dbg("%s - Unknown parity mode, disabling parity", __func__); | |
| cflag &= ~PARENB; | |
| bits &= ~BITS_PARITY_MASK; | |
| cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); | |
| break; | |
| } | |
| cflag &= ~CSTOPB; | |
| switch (bits & BITS_STOP_MASK) { | |
| case BITS_STOP_1: | |
| dbg("%s - stop bits = 1", __func__); | |
| break; | |
| case BITS_STOP_1_5: | |
| dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", | |
| __func__); | |
| bits &= ~BITS_STOP_MASK; | |
| cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); | |
| break; | |
| case BITS_STOP_2: | |
| dbg("%s - stop bits = 2", __func__); | |
| cflag |= CSTOPB; | |
| break; | |
| default: | |
| dbg("%s - Unknown number of stop bits, using 1 stop bit", | |
| __func__); | |
| bits &= ~BITS_STOP_MASK; | |
| cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); | |
| break; | |
| } | |
| cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); | |
| if (modem_ctl[0] & 0x0008) { | |
| dbg("%s - flow control = CRTSCTS", __func__); | |
| cflag |= CRTSCTS; | |
| } else { | |
| dbg("%s - flow control = NONE", __func__); | |
| cflag &= ~CRTSCTS; | |
| } | |
| *cflagp = cflag; | |
| } | |
| /* | |
| * CP2101 supports the following baud rates: | |
| * | |
| * 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800, | |
| * 38400, 56000, 57600, 115200, 128000, 230400, 460800, 921600 | |
| * | |
| * CP2102 and CP2103 support the following additional rates: | |
| * | |
| * 4000, 16000, 51200, 64000, 76800, 153600, 250000, 256000, 500000, | |
| * 576000 | |
| * | |
| * The device will map a requested rate to a supported one, but the result | |
| * of requests for rates greater than 1053257 is undefined (see AN205). | |
| * | |
| * CP2104, CP2105 and CP2110 support most rates up to 2M, 921k and 1M baud, | |
| * respectively, with an error less than 1%. The actual rates are determined | |
| * by | |
| * | |
| * div = round(freq / (2 x prescale x request)) | |
| * actual = freq / (2 x prescale x div) | |
| * | |
| * For CP2104 and CP2105 freq is 48Mhz and prescale is 4 for request <= 365bps | |
| * or 1 otherwise. | |
| * For CP2110 freq is 24Mhz and prescale is 4 for request <= 300bps or 1 | |
| * otherwise. | |
| */ | |
| static void cp210x_change_speed(struct tty_struct *tty, | |
| struct usb_serial_port *port, struct ktermios *old_termios) | |
| { | |
| u32 baud; | |
| baud = tty->termios->c_ospeed; | |
| /* This maps the requested rate to a rate valid on cp2102 or cp2103, | |
| * or to an arbitrary rate in [1M,2M]. | |
| * | |
| * NOTE: B0 is not implemented. | |
| */ | |
| baud = cp210x_quantise_baudrate(baud); | |
| dbg("%s - setting baud rate to %u", __func__, baud); | |
| if (cp210x_set_config(port, CP210X_SET_BAUDRATE, &baud, | |
| sizeof(baud))) { | |
| dev_warn(&port->dev, "failed to set baud rate to %u\n", baud); | |
| if (old_termios) | |
| baud = old_termios->c_ospeed; | |
| else | |
| baud = 9600; | |
| } | |
| tty_encode_baud_rate(tty, baud, baud); | |
| } | |
| static void cp210x_set_termios(struct tty_struct *tty, | |
| struct usb_serial_port *port, struct ktermios *old_termios) | |
| { | |
| unsigned int cflag, old_cflag; | |
| unsigned int bits; | |
| unsigned int modem_ctl[4]; | |
| dbg("%s - port %d", __func__, port->number); | |
| if (!tty) | |
| return; | |
| tty->termios->c_cflag &= ~CMSPAR; | |
| cflag = tty->termios->c_cflag; | |
| old_cflag = old_termios->c_cflag; | |
| if (tty->termios->c_ospeed != old_termios->c_ospeed) | |
| cp210x_change_speed(tty, port, old_termios); | |
| /* If the number of data bits is to be updated */ | |
| if ((cflag & CSIZE) != (old_cflag & CSIZE)) { | |
| cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); | |
| bits &= ~BITS_DATA_MASK; | |
| switch (cflag & CSIZE) { | |
| case CS5: | |
| bits |= BITS_DATA_5; | |
| dbg("%s - data bits = 5", __func__); | |
| break; | |
| case CS6: | |
| bits |= BITS_DATA_6; | |
| dbg("%s - data bits = 6", __func__); | |
| break; | |
| case CS7: | |
| bits |= BITS_DATA_7; | |
| dbg("%s - data bits = 7", __func__); | |
| break; | |
| case CS8: | |
| bits |= BITS_DATA_8; | |
| dbg("%s - data bits = 8", __func__); | |
| break; | |
| /*case CS9: | |
| bits |= BITS_DATA_9; | |
| dbg("%s - data bits = 9", __func__); | |
| break;*/ | |
| default: | |
| dbg("cp210x driver does not " | |
| "support the number of bits requested," | |
| " using 8 bit mode\n"); | |
| bits |= BITS_DATA_8; | |
| break; | |
| } | |
| if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) | |
| dbg("Number of data bits requested " | |
| "not supported by device\n"); | |
| } | |
| if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { | |
| cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); | |
| bits &= ~BITS_PARITY_MASK; | |
| if (cflag & PARENB) { | |
| if (cflag & PARODD) { | |
| bits |= BITS_PARITY_ODD; | |
| dbg("%s - parity = ODD", __func__); | |
| } else { | |
| bits |= BITS_PARITY_EVEN; | |
| dbg("%s - parity = EVEN", __func__); | |
| } | |
| } | |
| if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) | |
| dbg("Parity mode not supported " | |
| "by device\n"); | |
| } | |
| if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { | |
| cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); | |
| bits &= ~BITS_STOP_MASK; | |
| if (cflag & CSTOPB) { | |
| bits |= BITS_STOP_2; | |
| dbg("%s - stop bits = 2", __func__); | |
| } else { | |
| bits |= BITS_STOP_1; | |
| dbg("%s - stop bits = 1", __func__); | |
| } | |
| if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) | |
| dbg("Number of stop bits requested " | |
| "not supported by device\n"); | |
| } | |
| if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { | |
| cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); | |
| dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
| __func__, modem_ctl[0], modem_ctl[1], | |
| modem_ctl[2], modem_ctl[3]); | |
| if (cflag & CRTSCTS) { | |
| modem_ctl[0] &= ~0x7B; | |
| modem_ctl[0] |= 0x09; | |
| modem_ctl[1] = 0x80; | |
| dbg("%s - flow control = CRTSCTS", __func__); | |
| } else { | |
| modem_ctl[0] &= ~0x7B; | |
| modem_ctl[0] |= 0x01; | |
| modem_ctl[1] |= 0x40; | |
| dbg("%s - flow control = NONE", __func__); | |
| } | |
| dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", | |
| __func__, modem_ctl[0], modem_ctl[1], | |
| modem_ctl[2], modem_ctl[3]); | |
| cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); | |
| } | |
| } | |
| static int cp210x_tiocmset (struct tty_struct *tty, | |
| unsigned int set, unsigned int clear) | |
| { | |
| struct usb_serial_port *port = tty->driver_data; | |
| return cp210x_tiocmset_port(port, set, clear); | |
| } | |
| static int cp210x_tiocmset_port(struct usb_serial_port *port, | |
| unsigned int set, unsigned int clear) | |
| { | |
| unsigned int control = 0; | |
| dbg("%s - port %d", __func__, port->number); | |
| if (set & TIOCM_RTS) { | |
| control |= CONTROL_RTS; | |
| control |= CONTROL_WRITE_RTS; | |
| } | |
| if (set & TIOCM_DTR) { | |
| control |= CONTROL_DTR; | |
| control |= CONTROL_WRITE_DTR; | |
| } | |
| if (clear & TIOCM_RTS) { | |
| control &= ~CONTROL_RTS; | |
| control |= CONTROL_WRITE_RTS; | |
| } | |
| if (clear & TIOCM_DTR) { | |
| control &= ~CONTROL_DTR; | |
| control |= CONTROL_WRITE_DTR; | |
| } | |
| dbg("%s - control = 0x%.4x", __func__, control); | |
| return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); | |
| } | |
| static void cp210x_dtr_rts(struct usb_serial_port *p, int on) | |
| { | |
| if (on) | |
| cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0); | |
| else | |
| cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS); | |
| } | |
| static int cp210x_tiocmget (struct tty_struct *tty) | |
| { | |
| struct usb_serial_port *port = tty->driver_data; | |
| unsigned int control; | |
| int result; | |
| dbg("%s - port %d", __func__, port->number); | |
| cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); | |
| result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
| |((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
| |((control & CONTROL_CTS) ? TIOCM_CTS : 0) | |
| |((control & CONTROL_DSR) ? TIOCM_DSR : 0) | |
| |((control & CONTROL_RING)? TIOCM_RI : 0) | |
| |((control & CONTROL_DCD) ? TIOCM_CD : 0); | |
| dbg("%s - control = 0x%.2x", __func__, control); | |
| return result; | |
| } | |
| static void cp210x_break_ctl (struct tty_struct *tty, int break_state) | |
| { | |
| struct usb_serial_port *port = tty->driver_data; | |
| unsigned int state; | |
| dbg("%s - port %d", __func__, port->number); | |
| if (break_state == 0) | |
| state = BREAK_OFF; | |
| else | |
| state = BREAK_ON; | |
| dbg("%s - turning break %s", __func__, | |
| state == BREAK_OFF ? "off" : "on"); | |
| cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); | |
| } | |
| static int cp210x_startup(struct usb_serial *serial) | |
| { | |
| struct cp210x_port_private *port_priv; | |
| int i; | |
| /* cp210x buffers behave strangely unless device is reset */ | |
| usb_reset_device(serial->dev); | |
| for (i = 0; i < serial->num_ports; i++) { | |
| port_priv = kzalloc(sizeof(*port_priv), GFP_KERNEL); | |
| if (!port_priv) | |
| return -ENOMEM; | |
| memset(port_priv, 0x00, sizeof(*port_priv)); | |
| port_priv->bInterfaceNumber = | |
| serial->interface->cur_altsetting->desc.bInterfaceNumber; | |
| usb_set_serial_port_data(serial->port[i], port_priv); | |
| } | |
| return 0; | |
| } | |
| static void cp210x_release(struct usb_serial *serial) | |
| { | |
| struct cp210x_port_private *port_priv; | |
| int i; | |
| for (i = 0; i < serial->num_ports; i++) { | |
| port_priv = usb_get_serial_port_data(serial->port[i]); | |
| kfree(port_priv); | |
| usb_set_serial_port_data(serial->port[i], NULL); | |
| } | |
| } | |
| static int __init cp210x_init(void) | |
| { | |
| int retval; | |
| retval = usb_serial_register(&cp210x_device); | |
| if (retval) | |
| return retval; /* Failed to register */ | |
| retval = usb_register(&cp210x_driver); | |
| if (retval) { | |
| /* Failed to register */ | |
| usb_serial_deregister(&cp210x_device); | |
| return retval; | |
| } | |
| /* Success */ | |
| printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" | |
| DRIVER_DESC "\n"); | |
| return 0; | |
| } | |
| static void __exit cp210x_exit(void) | |
| { | |
| usb_deregister(&cp210x_driver); | |
| usb_serial_deregister(&cp210x_device); | |
| } | |
| module_init(cp210x_init); | |
| module_exit(cp210x_exit); | |
| MODULE_DESCRIPTION(DRIVER_DESC); | |
| MODULE_VERSION(DRIVER_VERSION); | |
| MODULE_LICENSE("GPL"); | |
| module_param(debug, bool, S_IRUGO | S_IWUSR); | |
| MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); |