X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=src%2Fcp210x.c.natty;fp=src%2Fcp210x.c.natty;h=0000000000000000000000000000000000000000;hb=ddb5e7353f20ff997659f72a0d2e67cfd7be6253;hp=d88d980311ee1c4101ffb8193492f653359ddfa0;hpb=3d6175b79d72cadeac5b25eae81d1cb77f6c8f39;p=cp210x.git diff --git a/src/cp210x.c.natty b/src/cp210x.c.natty deleted file mode 100644 index d88d980..0000000 --- a/src/cp210x.c.natty +++ /dev/null @@ -1,1309 +0,0 @@ -/* - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "cp210x.h" - -/* - * Version Information - */ -#define DRIVER_VERSION "vxxDEBVERxx" -#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_set_termios(struct tty_struct *, struct usb_serial_port *, - struct ktermios*); -static int cp210x_tiocmget(struct tty_struct *, struct file *); -static int cp210x_tiocmset(struct tty_struct *, struct file *, - unsigned int, unsigned int); -static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *, - unsigned int, unsigned int); -static void cp210x_break_ctl(struct tty_struct *, int); -static int cp210x_startup(struct usb_serial *); -static int cp210x_ioctl(struct tty_struct *, struct file *, - unsigned int, unsigned long); -static void cp210x_dtr_rts(struct usb_serial_port *p, int on); -static int cp210x_carrier_raised(struct usb_serial_port *p); - -static int debug; - -static const struct usb_device_id id_table[] = { - { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ - { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ - { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ - { 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, 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, 0x8149) }, /* West Mountain Radio Computerized Battery Analyzer */ - { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ - { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ - { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ - { 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, 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 demostration module */ - { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesys 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, 0x8411) }, /* Kyocera GPS Module */ - { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ - { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ - { USB_DEVICE(0x10C4, 0xEA61) }, /* 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, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ - { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ - { 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(0x413C, 0x9500) }, /* DW700 GPS USB interface */ - { } /* Terminating Entry */ -}; - -MODULE_DEVICE_TABLE(usb, id_table); - -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, - .ioctl = cp210x_ioctl, - .break_ctl = cp210x_break_ctl, - .set_termios = cp210x_set_termios, - .tiocmget = cp210x_tiocmget, - .tiocmset = cp210x_tiocmset, - .attach = cp210x_startup, - .dtr_rts = cp210x_dtr_rts, - .carrier_raised = cp210x_carrier_raised -}; - -/* 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 - -/* 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 0x0000 -#define BREAK_OFF 0x0001 - -/* 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_partnum() return codes */ -#define CP210x_PART_UNKNOWN 0x00 -#define CP210x_PART_CP2101 0x01 -#define CP210x_PART_CP2102 0x02 -#define CP210x_PART_CP2103 0x03 - -/* Taken from drivers/usb/gadget/usbstring.c */ -static int utf8_to_utf16le(const char *s, __le16 *cp, unsigned len) -{ - int count = 0; - u8 c; - u16 uchar; - - /* this insists on correct encodings, though not minimal ones. - * BUT it currently rejects legit 4-byte UTF-8 code points, - * which need surrogate pairs. (Unicode 3.1 can use them.) - */ - while (len != 0 && (c = (u8) *s++) != 0) { - if (unlikely(c & 0x80)) { - // 2-byte sequence: - // 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx - if ((c & 0xe0) == 0xc0) { - uchar = (c & 0x1f) << 6; - - c = (u8) *s++; - if ((c & 0xc0) != 0x80) - goto fail; - c &= 0x3f; - uchar |= c; - - // 3-byte sequence (most CJKV characters): - // zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx - } else if ((c & 0xf0) == 0xe0) { - uchar = (c & 0x0f) << 12; - - c = (u8) *s++; - if ((c & 0xc0) != 0x80) - goto fail; - c &= 0x3f; - uchar |= c << 6; - - c = (u8) *s++; - if ((c & 0xc0) != 0x80) - goto fail; - c &= 0x3f; - uchar |= c; - - /* no bogus surrogates */ - if (0xd800 <= uchar && uchar <= 0xdfff) - goto fail; - - // 4-byte sequence (surrogate pairs, currently rare): - // 11101110wwwwzzzzyy + 110111yyyyxxxxxx - // = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx - // (uuuuu = wwww + 1) - // FIXME accept the surrogate code points (only) - - } else - goto fail; - } else - uchar = c; - *cp++ = uchar; - count++; - len--; - } - return count; -fail: - return -1; -} - - -/* - * make_usb_string - * Populates usbstr with: (len) + (USB_DT_STRING) + unicode(str). Each char in - * usbstr consumes two bytes in unicode (__le16) format. - * Returns the resulting length of usbstr in bytes. - * This function can accept overlapping usbstr and str as long as the overlap - * does not cause data written to usbstr to overwrite data not yet read from - * str. - */ -static int make_usb_string(__le16* usbstr, size_t usblen, const char *src, - size_t srclen) -{ - int len; - - /* string descriptors have length, type, then UTF16-LE text */ - if (usblen > 254) - usblen = 254; - len = min(usblen / 2 - 1, srclen); - len = utf8_to_utf16le(src, usbstr + 1, len); - if (len >= 0) { - len = (len + 1) * 2; - ((u8 *)usbstr)[0] = len; - ((u8 *)usbstr)[1] = USB_DT_STRING; - } - return len; -} - -/* - * cp210x_usbstr_from_user - * Populate kbuf with a usb string derived from a user space variable. klen - * is the size of the buffer at kbuf. - * Returns the number of bytes used in kbuf. - */ -static size_t cp210x_usbstr_from_user(__le16 *kbuf, - struct cp210x_buffer __user *ubuf, size_t klen) -{ - struct cp210x_buffer t; - char *str; - size_t slen; - - if (copy_from_user(&t, ubuf, sizeof(t))) - return -EINVAL; - slen = klen / 2 - 1; - if (!t.buf || !t.len || t.len > slen) - return -EINVAL; - if (t.len < slen) - slen = t.len; - str = (char *)kbuf + klen - slen; - if (copy_from_user(str, (__u8 __user *)t.buf, slen)) - return -EINVAL; - return make_usb_string(kbuf, klen, str, slen); -} - -/* - * cp210x_ctlmsg - * A generic usb control message interface. - * Returns the actual size of the data read or written within the message, 0 - * if no data were read or written, or a negative value to indicate an error. - */ -static int cp210x_ctlmsg(struct usb_serial_port *port, u8 request, - u8 requestype, u16 value, u16 index, void *data, u16 size) -{ - struct usb_device *dev = port->serial->dev; - u8 *tbuf; - int ret; - - tbuf = kmalloc(size, GFP_KERNEL); - if (!tbuf) - return -ENOMEM; - if (requestype & USB_DIR_IN) { - ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, - requestype, value, index, tbuf, size, 300); - if (ret > 0 && size) - memcpy(data, tbuf, size); - } else { - if (size) - memcpy(tbuf, data, size); - ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, - requestype, value, index, tbuf, size, 300); - } - kfree(tbuf); - if (ret < 0 && ret != -EPIPE) { - dev_printk(KERN_DEBUG, &dev->dev, - "cp210x: ctl failed cmd rqt %u rq %u len %u ret %d\n", - requestype, request, size, ret); - } - return ret; -} - -static int cp210x_reset(struct usb_serial_port *port) -{ - dbg("%s", __func__); - - /* Instructing the CP210X to reset seems to work more reliably than - * calling usb_reset_device(). - */ - cp210x_ctlmsg(port, 0xff, USB_TYPE_VENDOR, - 0x0008, 0x00, NULL, 0); - return 0; -} - -static int cp210x_get_partnum(struct usb_serial_port *port) -{ - static u8 _partnum = CP210x_PART_UNKNOWN; - - if (_partnum == CP210x_PART_UNKNOWN) { - u8 addr = port->serial->dev->actconfig->interface[0]-> - cur_altsetting->endpoint[0].desc.bEndpointAddress & - USB_ENDPOINT_NUMBER_MASK; - - if (addr == 0x03 || addr == 0x02) - _partnum = CP210x_PART_CP2101; - else if (addr == 0x01) { - /* Must query part to determine part number */ - if (cp210x_ctlmsg(port, 0xff, - USB_DIR_IN|USB_TYPE_VENDOR, - 0x370b, 0x00, &_partnum, 1) != 1) - _partnum = CP210x_PART_UNKNOWN; - } - } - dbg("%s - partnum %u", __func__, _partnum); - return _partnum; -} - -static inline int cp210x_setu16(struct usb_serial_port *port, int cmd, - unsigned int value) -{ - return cp210x_ctlmsg(port, 0xff, USB_TYPE_VENDOR, - 0x3700 | (cmd & 0xff), value, NULL, 0); -} - -/* - * cp210x_setstr - * - * Set a USB string descriptor using proprietary cp210x control messages. - * Return the number of characters actually written. - */ -static int cp210x_setstr(struct usb_serial_port *port, int cmd, __le16 *usbstr) -{ - int len = ((u8 *)usbstr)[0]; - int ret = cp210x_ctlmsg(port, 0xff, USB_TYPE_VENDOR, - 0x3700 | (cmd & 0xff), 0, usbstr, len); - dbg("%s - cmd 0x%02x len %d ret %d", __func__, cmd, len, ret); - return ret; -} - -/* Set all gpio simultaneously */ -static int cp210x_gpioset(struct usb_serial_port *port, u8 gpio) -{ - dbg("%s - port %d, gpio = 0x%.2x", __func__, port->number, gpio); - - return cp210x_ctlmsg(port, 0xff, USB_TYPE_VENDOR, - 0x37e1, ((uint16_t)gpio << 8) | GPIO_MASK, NULL, 0); -} - -/* Set select gpio bits */ -static int cp210x_gpiosetb(struct usb_serial_port *port, u8 set, u8 clear) -{ - u16 gpio = 0; - - /* The bitmask is in the LSB, the values in the MSB */ - if (set & GPIO_0) - gpio |= (GPIO_0 << 8)|GPIO_0; - if (set & GPIO_1) - gpio |= (GPIO_1 << 8)|GPIO_1; - if (set & GPIO_2) - gpio |= (GPIO_2 << 8)|GPIO_2; - if (set & GPIO_3) - gpio |= (GPIO_3 << 8)|GPIO_3; - if (clear & GPIO_0) - gpio = (gpio & ~(GPIO_0 << 8))|GPIO_0; - if (clear & GPIO_1) - gpio = (gpio & ~(GPIO_1 << 8))|GPIO_1; - if (clear & GPIO_2) - gpio = (gpio & ~(GPIO_2 << 8))|GPIO_2; - if (clear & GPIO_3) - gpio = (gpio & ~(GPIO_3 << 8))|GPIO_3; - - dbg("%s - port %d, gpiob = 0x%.4x", __func__, port->number, gpio); - - return cp210x_ctlmsg(port, 0xff, USB_TYPE_VENDOR, - 0x37e1, gpio, NULL, 0); -} - -static int cp210x_gpioget(struct usb_serial_port *port, u8 *gpio) -{ - int ret; - - dbg("%s - port %d", __func__, port->number); - - ret = cp210x_ctlmsg(port, 0xff, USB_DIR_IN|USB_TYPE_VENDOR, - 0x00c2, 0, gpio, 1); - - dbg("%s - gpio = 0x%.2x (%d)", __func__, *gpio, ret); - - return (ret == 1) ? 0 : -1; -} - -static int cp210x_portconfset(struct usb_serial_port *port, - struct cp210x_port_config *config) -{ - struct cp210x_port_config lconfig; - int ret; - - dbg("%s", __func__); - - memcpy(&lconfig, config, sizeof(lconfig)); - - /* Words from cp210x are MSB */ - lconfig.reset.mode = cpu_to_be16(config->reset.mode); - lconfig.reset.latch = cpu_to_be16(config->reset.latch); - lconfig.suspend.mode = cpu_to_be16(config->suspend.mode); - lconfig.suspend.latch = cpu_to_be16(config->suspend.latch); - /* apparently not implemented by CP210X firmware */ - lconfig.suspend.lowPower = 0; - lconfig.reset.lowPower = 0; - - ret = cp210x_ctlmsg(port, 0xff, USB_TYPE_VENDOR, 0x370c, - 0, &lconfig, sizeof(struct cp210x_port_config)); - if (ret == sizeof(struct cp210x_port_config)) - return 0; - else if (ret >= 0) - return -1; - else - return ret; -} - -static int cp210x_portconfget(struct usb_serial_port *port, - struct cp210x_port_config *config) -{ - int ret; - - dbg("%s", __func__); - - ret = cp210x_ctlmsg(port, 0xff, USB_DIR_IN|USB_TYPE_VENDOR, - 0x370c, 0, config, sizeof(struct cp210x_port_config)); - if (ret == sizeof(struct cp210x_port_config)) { - /* Words from cp210x are MSB */ - config->reset.mode = be16_to_cpu(config->reset.mode); - config->reset.lowPower = be16_to_cpu(config->reset.lowPower); - config->reset.latch = be16_to_cpu(config->reset.latch); - config->suspend.mode = be16_to_cpu(config->suspend.mode); - config->suspend.lowPower = - be16_to_cpu(config->suspend.lowPower); - config->suspend.latch = be16_to_cpu(config->suspend.latch); - - /* apparently not implemented yet */ - config->reset.lowPower = 0; - config->suspend.lowPower = 0; - - return 0; - } else if (ret >= 0) - return -1; - else - return ret; - -} - -/* - * 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; - __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, - USB_DIR_IN|USB_TYPE_VENDOR|USB_RECIP_INTERFACE, - 0x0000, 0, buf, size, 300); - - /* 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; - __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, - USB_TYPE_VENDOR|USB_RECIP_INTERFACE, 0x0000, - 0, buf, size, 300); - } else { - result = usb_control_msg(serial->dev, - usb_sndctrlpipe(serial->dev, 0), request, - USB_TYPE_VENDOR|USB_RECIP_INTERFACE, data[0], - 0, NULL, 0, 300); - } - - 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 <= 56) baud = 0; - else 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 <= 1053257) baud = 921600; - else if (baud <= 1474560) baud = 1228800; - else if (baud <= 2457600) baud = 1843200; - else baud = 3686400; - return baud; -} - -static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) -{ - int result; - - 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; - } - - result = usb_serial_generic_open(tty, port); - if (result) - return result; - - /* Configure the termios structure */ - cp210x_get_termios(tty, port); - return 0; -} - -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); -} - -static int cp210x_ioctl(struct tty_struct *tty, struct file *file, - unsigned int cmd, unsigned long arg) -{ - struct usb_serial_port *port = tty->driver_data; - - dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd); - - switch (cmd) { - - case TIOCMGET: - { - int result = cp210x_tiocmget(tty, file); - if (copy_to_user((int __user *)&arg, &result, sizeof(int))) - return -EFAULT; - return 0; - } - break; - - case TIOCMSET: - case TIOCMBIS: - case TIOCMBIC: - { - int val = 0; - - if (copy_from_user(&val, (int __user *)&arg, sizeof(int))) - return -EFAULT; - - /* this looks wrong: TIOCMSET isn't going to work right */ - if (cp210x_tiocmset(tty, file, (cmd == TIOCMBIC) ? 0 : val, - (cmd == TIOCMBIC) ? val : 0)) - return -EFAULT; - return 0; - } - break; - - case CP210x_IOCTL_GPIOGET: - if (cp210x_get_partnum(port) == CP210x_PART_CP2103) { - u8 gpio = 0; - if (!cp210x_gpioget(port, &gpio) && !copy_to_user( - (__u8 __user *)arg, &gpio, - sizeof(gpio))) - return 0; - } - return -EFAULT; - break; - - case CP210x_IOCTL_GPIOSET: - if (cp210x_get_partnum(port) == CP210x_PART_CP2103 && - !cp210x_gpioset(port, arg)) - return 0; - return -EFAULT; - break; - - case CP210x_IOCTL_GPIOBIC: - case CP210x_IOCTL_GPIOBIS: - if (cp210x_get_partnum(port) == CP210x_PART_CP2103 && - !cp210x_gpiosetb(port, - (cmd == CP210x_IOCTL_GPIOBIC) ? 0 : arg, - (cmd == CP210x_IOCTL_GPIOBIC) ? arg : 0)) - return 0; - return -EFAULT; - break; - - case CP210x_IOCTL_DEVICERESET: - return cp210x_reset(port); - break; - - case CP210x_IOCTL_PORTCONFGET: - { - struct cp210x_port_config config; - if (!cp210x_portconfget(port, &config) && !copy_to_user( - (struct cp210x_port_config __user *)arg, - &config, sizeof(config))) - return 0; - } - return -EFAULT; - break; - - case CP210x_IOCTL_PORTCONFSET: - { - struct cp210x_port_config config; - if (!copy_from_user(&config, (struct cp210x_port_config __user *)arg, - sizeof(config)) && - !cp210x_portconfset(port, &config)) - return 0; - return -EFAULT; - } - break; - - case CP210x_IOCTL_SETVID: - { - unsigned int vid; - if (!copy_from_user(&vid, (unsigned int __user *)arg, - sizeof(unsigned int)) && - !cp210x_setu16(port, 0x01, vid)) - return 0; - return -EFAULT; - } - break; - - case CP210x_IOCTL_SETPID: - { - unsigned int pid; - if (!copy_from_user(&pid, (unsigned int __user *)arg, - sizeof(unsigned int)) && - !cp210x_setu16(port, 0x02, pid)) - return 0; - return -EFAULT; - } - break; - - case CP210x_IOCTL_SETPRODUCT: - { - __le16 usbstr[CP210x_MAX_PRODUCT_STRLEN + 1]; - size_t len = cp210x_usbstr_from_user(usbstr, - (struct cp210x_buffer __user *)arg, - sizeof(usbstr)); - if (len > 0 && cp210x_setstr(port, 0x03, usbstr) == len) - return 0; - return -EFAULT; - } - break; - - case CP210x_IOCTL_SETSERIAL: - { - __le16 usbstr[CP210x_MAX_SERIAL_STRLEN + 1]; - size_t len = cp210x_usbstr_from_user(usbstr, - (struct cp210x_buffer __user *)arg, - sizeof(usbstr)); - if (len > 0 && cp210x_setstr(port, 0x04, usbstr) == len) - return 0; - return -EFAULT; - } - break; - - case CP210x_IOCTL_SETDEVVER: - { - unsigned int ver; - if (!copy_from_user(&ver, (unsigned int __user *)arg, - sizeof(unsigned int)) && - !cp210x_setu16(port, 0x07, ver)) - return 0; - return -EFAULT; - } - break; - - default: - dbg("%s not supported = 0x%04x", __func__, cmd); - break; - } - - return -ENOIOCTLCMD; -} - -/* - * 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_BAUDDIV, &baud, 2); - /* Convert to baudrate */ - if (baud) - baud = cp210x_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud); - - 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; -} - -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 baud = 0, 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; - baud = cp210x_quantise_baudrate(tty_get_baud_rate(tty)); - - /* If the baud rate is to be updated*/ - if (baud != tty_termios_baud_rate(old_termios) && baud != 0) { - dbg("%s - Setting baud rate to %d baud", __func__, - baud); - if (cp210x_set_config_single(port, CP210X_SET_BAUDDIV, - ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) { - dbg("Baud rate requested not supported by device"); - baud = tty_termios_baud_rate(old_termios); - } - } - /* Report back the resulting baud rate */ - tty_encode_baud_rate(tty, baud, baud); - - /* 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, struct file *file, - unsigned int set, unsigned int clear) -{ - struct usb_serial_port *port = tty->driver_data; - return cp210x_tiocmset_port(port, file, set, clear); -} - -static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file, - 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, NULL, TIOCM_DTR|TIOCM_RTS, 0); - else - cp210x_tiocmset_port(p, NULL, 0, TIOCM_DTR|TIOCM_RTS); -} - -static int cp210x_tiocmget (struct tty_struct *tty, struct file *file) -{ - 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 int cp210x_carrier_raised(struct usb_serial_port *p) -{ - unsigned int control; - cp210x_get_config(p, CP210X_GET_MDMSTS, &control, 1); - if (control & CONTROL_DCD) - return 1; - return 0; -} - -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) -{ - /* cp210x buffers behave strangely unless device is reset */ - usb_reset_device(serial->dev); - return 0; -} - -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");