From 629d9ddcd205a10cd068443834b78e1bfe99bc74 Mon Sep 17 00:00:00 2001 From: "R. Steve McKown" Date: Wed, 25 Nov 2009 19:07:36 -0700 Subject: [PATCH] Merge functionality changes from in-kernel 2.6.31 driver. This is is the karmic (2.6.31) driver. The hardy (2.6.24) driver is cp210x.c in the master branch. --- src/cp210x-2624.c | 760 +++++++++++++++++++++++++++++++++++++++++ src/cp210x-2631.c | 846 ++++++++++++++++++++++++++++++++++++++++++++++ src/cp210x.c | 606 ++++++++++++++++++--------------- 3 files changed, 1937 insertions(+), 275 deletions(-) create mode 100644 src/cp210x-2624.c create mode 100644 src/cp210x-2631.c diff --git a/src/cp210x-2624.c b/src/cp210x-2624.c new file mode 100644 index 0000000..2283358 --- /dev/null +++ b/src/cp210x-2624.c @@ -0,0 +1,760 @@ +/* + * Silicon Laboratories CP2101/CP2102 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 + * + * Outstanding Issues: + * Buffers are not flushed when the port is opened. + * Multiple calls to write() may fail with "Resource temporarily unavailable" + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * Version Information + */ +#define DRIVER_VERSION "v0.07" +#define DRIVER_DESC "Silicon Labs CP2101/CP2102 RS232 serial adaptor driver" + +/* + * Function Prototypes + */ +static int cp2101_open(struct usb_serial_port*, struct file*); +static void cp2101_cleanup(struct usb_serial_port*); +static void cp2101_close(struct usb_serial_port*, struct file*); +static void cp2101_get_termios(struct usb_serial_port*); +static void cp2101_set_termios(struct usb_serial_port*, struct ktermios*); +static int cp2101_tiocmget (struct usb_serial_port *, struct file *); +static int cp2101_tiocmset (struct usb_serial_port *, struct file *, + unsigned int, unsigned int); +static void cp2101_break_ctl(struct usb_serial_port*, int); +static int cp2101_startup (struct usb_serial *); +static void cp2101_shutdown(struct usb_serial*); + + +static int debug; + +static struct usb_device_id id_table [] = { + { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ + { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ + { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ + { 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, 0x803B) }, /* Pololu USB-serial converter */ + { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ + { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ + { 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, 0x813D) }, /* Burnside Telecom Deskmobile */ + { 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, 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, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ + { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ + { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ + { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ + { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ + { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ + { } /* Terminating Entry */ +}; + +MODULE_DEVICE_TABLE (usb, id_table); + +static struct usb_driver cp2101_driver = { + .name = "cp2101", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = id_table, + .no_dynamic_id = 1, +}; + +static struct usb_serial_driver cp2101_device = { + .driver = { + .owner = THIS_MODULE, + .name = "cp2101", + }, + .usb_driver = &cp2101_driver, + .id_table = id_table, + .num_interrupt_in = 0, + .num_bulk_in = NUM_DONT_CARE, + .num_bulk_out = NUM_DONT_CARE, + .num_ports = 1, + .open = cp2101_open, + .close = cp2101_close, + .break_ctl = cp2101_break_ctl, + .set_termios = cp2101_set_termios, + .tiocmget = cp2101_tiocmget, + .tiocmset = cp2101_tiocmset, + .attach = cp2101_startup, + .shutdown = cp2101_shutdown, +}; + +/* Config request types */ +#define REQTYPE_HOST_TO_DEVICE 0x41 +#define REQTYPE_DEVICE_TO_HOST 0xc1 + +/* Config SET requests. To GET, add 1 to the request number */ +#define CP2101_UART 0x00 /* Enable / Disable */ +#define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */ +#define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */ +#define CP2101_BREAK 0x05 /* On / Off */ +#define CP2101_CONTROL 0x07 /* Flow control line states */ +#define CP2101_MODEMCTL 0x13 /* Modem controls */ +#define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */ + +/* CP2101_UART */ +#define UART_ENABLE 0x0001 +#define UART_DISABLE 0x0000 + +/* CP2101_BAUDRATE */ +#define BAUD_RATE_GEN_FREQ 0x384000 + +/* CP2101_BITS */ +#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 + +/* CP2101_BREAK */ +#define BREAK_ON 0x0000 +#define BREAK_OFF 0x0001 + +/* CP2101_CONTROL */ +#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 + +/* + * cp2101_get_config + * Reads from the CP2101 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 cp2101_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", __FUNCTION__); + return -ENOMEM; + } + + /* For get requests, the request number must be incremented */ + request++; + + /* 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, + 0, buf, size, 300); + + /* Convert data into an array of integers */ + for (i=0; idev, "%s - Unable to send config request, " + "request=0x%x size=%d result=%d\n", + __FUNCTION__, request, size, result); + return -EPROTO; + } + + return 0; +} + +/* + * cp2101_set_config + * Writes to the CP2101 configuration registers + * Values less than 16 bits wide are sent directly + * 'size' is specified in bytes. + */ +static int cp2101_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", + __FUNCTION__); + 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, + 0, buf, size, 300); + } else { + result = usb_control_msg (serial->dev, + usb_sndctrlpipe(serial->dev, 0), + request, REQTYPE_HOST_TO_DEVICE, data[0], + 0, NULL, 0, 300); + } + + kfree(buf); + + if ((size > 2 && result != size) || result < 0) { + dev_err(&port->dev, "%s - Unable to send request, " + "request=0x%x size=%d result=%d\n", + __FUNCTION__, request, size, result); + return -EPROTO; + } + + /* Single data value */ + result = usb_control_msg (serial->dev, + usb_sndctrlpipe(serial->dev, 0), + request, REQTYPE_HOST_TO_DEVICE, data[0], + 0, NULL, 0, 300); + return 0; +} + +/* + * cp2101_set_config_single + * Convenience function for calling cp2101_set_config on single data values + * without requiring an integer pointer + */ +static inline int cp2101_set_config_single(struct usb_serial_port* port, + u8 request, unsigned int data) +{ + return cp2101_set_config(port, request, &data, 2); +} + +static int cp2101_open (struct usb_serial_port *port, struct file *filp) +{ + struct usb_serial *serial = port->serial; + int result; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (cp2101_set_config_single(port, CP2101_UART, UART_ENABLE)) { + dev_err(&port->dev, "%s - Unable to enable UART\n", + __FUNCTION__); + return -EPROTO; + } + + /* Start reading from the device */ + usb_fill_bulk_urb (port->read_urb, serial->dev, + usb_rcvbulkpipe(serial->dev, + port->bulk_in_endpointAddress), + port->read_urb->transfer_buffer, + port->read_urb->transfer_buffer_length, + serial->type->read_bulk_callback, + port); + result = usb_submit_urb(port->read_urb, GFP_KERNEL); + if (result) { + dev_err(&port->dev, "%s - failed resubmitting read urb, " + "error %d\n", __FUNCTION__, result); + return result; + } + + /* Configure the termios structure */ + cp2101_get_termios(port); + + /* Set the DTR and RTS pins low */ + cp2101_tiocmset(port, NULL, TIOCM_DTR | TIOCM_RTS, 0); + + return 0; +} + +static void cp2101_cleanup (struct usb_serial_port *port) +{ + struct usb_serial *serial = port->serial; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (serial->dev) { + /* shutdown any bulk reads that might be going on */ + if (serial->num_bulk_out) + usb_kill_urb(port->write_urb); + if (serial->num_bulk_in) + usb_kill_urb(port->read_urb); + } +} + +static void cp2101_close (struct usb_serial_port *port, struct file * filp) +{ + dbg("%s - port %d", __FUNCTION__, port->number); + + /* shutdown our urbs */ + dbg("%s - shutting down urbs", __FUNCTION__); + usb_kill_urb(port->write_urb); + usb_kill_urb(port->read_urb); + + cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); +} + +/* + * cp2101_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 cp2101_get_termios (struct usb_serial_port *port) +{ + unsigned int cflag, modem_ctl[4]; + int baud; + int bits; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (!port->tty || !port->tty->termios) { + dbg("%s - no tty structures", __FUNCTION__); + return; + } + + cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2); + /* Convert to baudrate */ + if (baud) + baud = BAUD_RATE_GEN_FREQ / baud; + + dbg("%s - baud rate = %d", __FUNCTION__, baud); + + tty_encode_baud_rate(port->tty, baud, baud); + cflag = port->tty->termios->c_cflag; + + cp2101_get_config(port, CP2101_BITS, &bits, 2); + cflag &= ~CSIZE; + switch(bits & BITS_DATA_MASK) { + case BITS_DATA_5: + dbg("%s - data bits = 5", __FUNCTION__); + cflag |= CS5; + break; + case BITS_DATA_6: + dbg("%s - data bits = 6", __FUNCTION__); + cflag |= CS6; + break; + case BITS_DATA_7: + dbg("%s - data bits = 7", __FUNCTION__); + cflag |= CS7; + break; + case BITS_DATA_8: + dbg("%s - data bits = 8", __FUNCTION__); + cflag |= CS8; + break; + case BITS_DATA_9: + dbg("%s - data bits = 9 (not supported, " + "using 8 data bits)", __FUNCTION__); + cflag |= CS8; + bits &= ~BITS_DATA_MASK; + bits |= BITS_DATA_8; + cp2101_set_config(port, CP2101_BITS, &bits, 2); + break; + default: + dbg("%s - Unknown number of data bits, " + "using 8", __FUNCTION__); + cflag |= CS8; + bits &= ~BITS_DATA_MASK; + bits |= BITS_DATA_8; + cp2101_set_config(port, CP2101_BITS, &bits, 2); + break; + } + + switch(bits & BITS_PARITY_MASK) { + case BITS_PARITY_NONE: + dbg("%s - parity = NONE", __FUNCTION__); + cflag &= ~PARENB; + break; + case BITS_PARITY_ODD: + dbg("%s - parity = ODD", __FUNCTION__); + cflag |= (PARENB|PARODD); + break; + case BITS_PARITY_EVEN: + dbg("%s - parity = EVEN", __FUNCTION__); + cflag &= ~PARODD; + cflag |= PARENB; + break; + case BITS_PARITY_MARK: + dbg("%s - parity = MARK (not supported, " + "disabling parity)", __FUNCTION__); + cflag &= ~PARENB; + bits &= ~BITS_PARITY_MASK; + cp2101_set_config(port, CP2101_BITS, &bits, 2); + break; + case BITS_PARITY_SPACE: + dbg("%s - parity = SPACE (not supported, " + "disabling parity)", __FUNCTION__); + cflag &= ~PARENB; + bits &= ~BITS_PARITY_MASK; + cp2101_set_config(port, CP2101_BITS, &bits, 2); + break; + default: + dbg("%s - Unknown parity mode, " + "disabling parity", __FUNCTION__); + cflag &= ~PARENB; + bits &= ~BITS_PARITY_MASK; + cp2101_set_config(port, CP2101_BITS, &bits, 2); + break; + } + + cflag &= ~CSTOPB; + switch(bits & BITS_STOP_MASK) { + case BITS_STOP_1: + dbg("%s - stop bits = 1", __FUNCTION__); + break; + case BITS_STOP_1_5: + dbg("%s - stop bits = 1.5 (not supported, " + "using 1 stop bit)", __FUNCTION__); + bits &= ~BITS_STOP_MASK; + cp2101_set_config(port, CP2101_BITS, &bits, 2); + break; + case BITS_STOP_2: + dbg("%s - stop bits = 2", __FUNCTION__); + cflag |= CSTOPB; + break; + default: + dbg("%s - Unknown number of stop bits, " + "using 1 stop bit", __FUNCTION__); + bits &= ~BITS_STOP_MASK; + cp2101_set_config(port, CP2101_BITS, &bits, 2); + break; + } + + cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); + if (modem_ctl[0] & 0x0008) { + dbg("%s - flow control = CRTSCTS", __FUNCTION__); + cflag |= CRTSCTS; + } else { + dbg("%s - flow control = NONE", __FUNCTION__); + cflag &= ~CRTSCTS; + } + + port->tty->termios->c_cflag = cflag; +} + +static void cp2101_set_termios (struct usb_serial_port *port, + struct ktermios *old_termios) +{ + unsigned int cflag, old_cflag; + int baud=0, bits; + unsigned int modem_ctl[4]; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (!port->tty || !port->tty->termios) { + dbg("%s - no tty structures", __FUNCTION__); + return; + } + port->tty->termios->c_cflag &= ~CMSPAR; + + cflag = port->tty->termios->c_cflag; + old_cflag = old_termios->c_cflag; + baud = tty_get_baud_rate(port->tty); + + /* If the baud rate is to be updated*/ + if (baud != tty_termios_baud_rate(old_termios)) { + switch (baud) { + case 0: + case 600: + case 1200: + case 1800: + case 2400: + case 4800: + case 7200: + case 9600: + case 14400: + case 19200: + case 28800: + case 38400: + case 55854: + case 57600: + case 115200: + case 127117: + case 230400: + case 460800: + case 921600: + case 3686400: + break; + default: + baud = 9600; + break; + } + + if (baud) { + dbg("%s - Setting baud rate to %d baud", __FUNCTION__, + baud); + if (cp2101_set_config_single(port, CP2101_BAUDRATE, + (BAUD_RATE_GEN_FREQ / baud))) { + dev_err(&port->dev, "Baud rate requested not " + "supported by device\n"); + baud = tty_termios_baud_rate(old_termios); + } + } + } + /* Report back the resulting baud rate */ + tty_encode_baud_rate(port->tty, baud, baud); + + /* If the number of data bits is to be updated */ + if ((cflag & CSIZE) != (old_cflag & CSIZE)) { + cp2101_get_config(port, CP2101_BITS, &bits, 2); + bits &= ~BITS_DATA_MASK; + switch (cflag & CSIZE) { + case CS5: + bits |= BITS_DATA_5; + dbg("%s - data bits = 5", __FUNCTION__); + break; + case CS6: + bits |= BITS_DATA_6; + dbg("%s - data bits = 6", __FUNCTION__); + break; + case CS7: + bits |= BITS_DATA_7; + dbg("%s - data bits = 7", __FUNCTION__); + break; + case CS8: + bits |= BITS_DATA_8; + dbg("%s - data bits = 8", __FUNCTION__); + break; + /*case CS9: + bits |= BITS_DATA_9; + dbg("%s - data bits = 9", __FUNCTION__); + break;*/ + default: + dev_err(&port->dev, "cp2101 driver does not " + "support the number of bits requested," + " using 8 bit mode\n"); + bits |= BITS_DATA_8; + break; + } + if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) + dev_err(&port->dev, "Number of data bits requested " + "not supported by device\n"); + } + + if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { + cp2101_get_config(port, CP2101_BITS, &bits, 2); + bits &= ~BITS_PARITY_MASK; + if (cflag & PARENB) { + if (cflag & PARODD) { + bits |= BITS_PARITY_ODD; + dbg("%s - parity = ODD", __FUNCTION__); + } else { + bits |= BITS_PARITY_EVEN; + dbg("%s - parity = EVEN", __FUNCTION__); + } + } + if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) + dev_err(&port->dev, "Parity mode not supported " + "by device\n"); + } + + if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { + cp2101_get_config(port, CP2101_BITS, &bits, 2); + bits &= ~BITS_STOP_MASK; + if (cflag & CSTOPB) { + bits |= BITS_STOP_2; + dbg("%s - stop bits = 2", __FUNCTION__); + } else { + bits |= BITS_STOP_1; + dbg("%s - stop bits = 1", __FUNCTION__); + } + if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) + dev_err(&port->dev, "Number of stop bits requested " + "not supported by device\n"); + } + + if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { + cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); + dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", + __FUNCTION__, 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", __FUNCTION__); + } else { + modem_ctl[0] &= ~0x7B; + modem_ctl[0] |= 0x01; + modem_ctl[1] |= 0x40; + dbg("%s - flow control = NONE", __FUNCTION__); + } + + dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", + __FUNCTION__, modem_ctl[0], modem_ctl[1], + modem_ctl[2], modem_ctl[3]); + cp2101_set_config(port, CP2101_MODEMCTL, modem_ctl, 16); + } + +} + +static int cp2101_tiocmset (struct usb_serial_port *port, struct file *file, + unsigned int set, unsigned int clear) +{ + int control = 0; + + dbg("%s - port %d", __FUNCTION__, 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", __FUNCTION__, control); + + return cp2101_set_config(port, CP2101_CONTROL, &control, 2); + +} + +static int cp2101_tiocmget (struct usb_serial_port *port, struct file *file) +{ + int control, result; + + dbg("%s - port %d", __FUNCTION__, port->number); + + cp2101_get_config(port, CP2101_CONTROL, &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", __FUNCTION__, control); + + return result; +} + +static void cp2101_break_ctl (struct usb_serial_port *port, int break_state) +{ + int state; + + dbg("%s - port %d", __FUNCTION__, port->number); + if (break_state == 0) + state = BREAK_OFF; + else + state = BREAK_ON; + dbg("%s - turning break %s", __FUNCTION__, + state==BREAK_OFF ? "off" : "on"); + cp2101_set_config(port, CP2101_BREAK, &state, 2); +} + +static int cp2101_startup (struct usb_serial *serial) +{ + /* CP2101 buffers behave strangely unless device is reset */ + usb_reset_device(serial->dev); + return 0; +} + +static void cp2101_shutdown (struct usb_serial *serial) +{ + int i; + + dbg("%s", __FUNCTION__); + + /* Stop reads and writes on all ports */ + for (i=0; i < serial->num_ports; ++i) { + cp2101_cleanup(serial->port[i]); + } +} + +static int __init cp2101_init (void) +{ + int retval; + + retval = usb_serial_register(&cp2101_device); + if (retval) + return retval; /* Failed to register */ + + retval = usb_register(&cp2101_driver); + if (retval) { + /* Failed to register */ + usb_serial_deregister(&cp2101_device); + return retval; + } + + /* Success */ + info(DRIVER_DESC " " DRIVER_VERSION); + return 0; +} + +static void __exit cp2101_exit (void) +{ + usb_deregister (&cp2101_driver); + usb_serial_deregister (&cp2101_device); +} + +module_init(cp2101_init); +module_exit(cp2101_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"); diff --git a/src/cp210x-2631.c b/src/cp210x-2631.c new file mode 100644 index 0000000..985cbcf --- /dev/null +++ b/src/cp210x-2631.c @@ -0,0 +1,846 @@ +/* + * 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 + +/* + * 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 *, struct usb_serial_port *, + struct file *); +static void cp210x_cleanup(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 void cp210x_disconnect(struct usb_serial *); + +static int debug; + +static 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(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, 0x8053) }, /* Enfora EDG1228 */ + { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ + { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ + { 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, 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, 0x819F) }, /* MJS USB Toslink Switcher */ + { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ + { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ + { 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, 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, 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(0x18EF, 0xE00F) }, /* ELV USB-I2C-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, + .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, + .disconnect = cp210x_disconnect, +}; + +/* 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 + +/* 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_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, REQTYPE_DEVICE_TO_HOST, 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, REQTYPE_HOST_TO_DEVICE, 0x0000, + 0, buf, size, 300); + } else { + result = usb_control_msg(serial->dev, + usb_sndctrlpipe(serial->dev, 0), + request, REQTYPE_HOST_TO_DEVICE, 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; + } + + /* Single data value */ + result = usb_control_msg(serial->dev, + usb_sndctrlpipe(serial->dev, 0), + request, REQTYPE_HOST_TO_DEVICE, data[0], + 0, NULL, 0, 300); + 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, + struct file *filp) +{ + struct usb_serial *serial = port->serial; + 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; + } + + /* Start reading from the device */ + usb_fill_bulk_urb(port->read_urb, serial->dev, + usb_rcvbulkpipe(serial->dev, + port->bulk_in_endpointAddress), + port->read_urb->transfer_buffer, + port->read_urb->transfer_buffer_length, + serial->type->read_bulk_callback, + port); + result = usb_submit_urb(port->read_urb, GFP_KERNEL); + if (result) { + dev_err(&port->dev, "%s - failed resubmitting read urb, " + "error %d\n", __func__, result); + return result; + } + + /* Configure the termios structure */ + cp210x_get_termios(tty, port); + + /* Set the DTR and RTS pins low */ + cp210x_tiocmset_port(tty ? (struct usb_serial_port *) tty->driver_data + : port, + NULL, TIOCM_DTR | TIOCM_RTS, 0); + + return 0; +} + +static void cp210x_cleanup(struct usb_serial_port *port) +{ + struct usb_serial *serial = port->serial; + + dbg("%s - port %d", __func__, port->number); + + if (serial->dev) { + /* shutdown any bulk reads that might be going on */ + if (serial->num_bulk_out) + usb_kill_urb(port->write_urb); + if (serial->num_bulk_in) + usb_kill_urb(port->read_urb); + } +} + +static void cp210x_close(struct usb_serial_port *port) +{ + dbg("%s - port %d", __func__, port->number); + + /* shutdown our urbs */ + dbg("%s - shutting down urbs", __func__); + usb_kill_urb(port->write_urb); + usb_kill_urb(port->read_urb); + + 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_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\n"); + 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 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 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 void cp210x_disconnect(struct usb_serial *serial) +{ + int i; + + dbg("%s", __func__); + + /* Stop reads and writes on all ports */ + for (i = 0; i < serial->num_ports; ++i) + cp210x_cleanup(serial->port[i]); +} + +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"); diff --git a/src/cp210x.c b/src/cp210x.c index a8851dd..7843672 100644 --- a/src/cp210x.c +++ b/src/cp210x.c @@ -16,10 +16,6 @@ * vxxPKGVERxx by R. Steve McKown, Titanium Mirror, Inc., rsmckown@gmail.com. * Added port configuration, usb descriptor and gpio management. * - * Outstanding Issues: - * Buffers are not flushed when the port is opened. - * Multiple calls to write() may fail with "Resource temporarily unavailable" - * */ #include @@ -30,7 +26,7 @@ #include #include #include -#include +#include #include /* @@ -42,18 +38,25 @@ /* * Function Prototypes */ -static int cp210x_open(struct usb_serial_port*, struct file*); -static void cp210x_cleanup(struct usb_serial_port*); -static void cp210x_close(struct usb_serial_port*, struct file*); -static void cp210x_get_termios(struct usb_serial_port*); -static void cp210x_set_termios(struct usb_serial_port*, struct ktermios*); -static int cp210x_tiocmget(struct usb_serial_port *, struct file *); -static int cp210x_tiocmset(struct usb_serial_port *, struct file *, +static int cp210x_open(struct tty_struct *, struct usb_serial_port *, + struct file *); +static void cp210x_cleanup(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 usb_serial_port*, int); +static void cp210x_break_ctl(struct tty_struct *, int); static int cp210x_startup(struct usb_serial *); -static void cp210x_shutdown(struct usb_serial*); -static int cp210x_ioctl(struct usb_serial_port *, struct file *, +static void cp210x_disconnect(struct usb_serial *); +static int cp210x_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long); static int debug; @@ -138,9 +141,6 @@ static struct usb_serial_driver cp210x_device = { }, .usb_driver = &cp210x_driver, .id_table = id_table, - .num_interrupt_in = 0, - .num_bulk_in = NUM_DONT_CARE, - .num_bulk_out = NUM_DONT_CARE, .num_ports = 1, .open = cp210x_open, .close = cp210x_close, @@ -150,30 +150,47 @@ static struct usb_serial_driver cp210x_device = { .tiocmget = cp210x_tiocmget, .tiocmset = cp210x_tiocmset, .attach = cp210x_startup, - .shutdown = cp210x_shutdown, + .disconnect = cp210x_disconnect, }; /* Config request types */ #define REQTYPE_HOST_TO_DEVICE 0x41 #define REQTYPE_DEVICE_TO_HOST 0xc1 -/* Config SET requests. To GET, add 1 to the request number */ -#define CP2101_UART 0x00 /* Enable / Disable */ -#define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */ -#define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */ -#define CP2101_BREAK 0x05 /* On / Off */ -#define CP2101_CONTROL 0x07 /* Flow control line states */ -#define CP2101_MODEMCTL 0x13 /* Modem controls */ -#define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */ - -/* CP2101_UART */ +/* 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 -/* CP2101_BAUDRATE */ +/* CP210X_(SET|GET)_BAUDDIV */ #define BAUD_RATE_GEN_FREQ 0x384000 -/* CP2101_BITS */ +/* CP210X_(SET|GET)_LINE_CTL */ #define BITS_DATA_MASK 0X0f00 #define BITS_DATA_5 0X0500 #define BITS_DATA_6 0X0600 @@ -193,11 +210,11 @@ static struct usb_serial_driver cp210x_device = { #define BITS_STOP_1_5 0x0001 #define BITS_STOP_2 0x0002 -/* CP2101_BREAK */ +/* CP210X_SET_BREAK */ #define BREAK_ON 0x0000 #define BREAK_OFF 0x0001 -/* CP2101_CONTROL */ +/* CP210X_(SET_MHS|GET_MDMSTS) */ #define CONTROL_DTR 0x0001 #define CONTROL_RTS 0x0002 #define CONTROL_CTS 0x0010 @@ -559,13 +576,10 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request, buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); if (!buf) { - dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__); + dev_err(&port->dev, "%s - out of memory.\n", __func__); return -ENOMEM; } - /* For get requests, the request number must be incremented */ - request++; - /* 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, @@ -578,9 +592,9 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request, kfree(buf); if (result != size) { - dev_err(&port->dev, "%s - Unable to send config request, " + dbg("%s - Unable to send config request, " "request=0x%x size=%d result=%d\n", - __FUNCTION__, request, size, result); + __func__, request, size, result); return -EPROTO; } @@ -606,7 +620,7 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request, buf = kmalloc(length * sizeof(__le32), GFP_KERNEL); if (!buf) { dev_err(&port->dev, "%s - out of memory.\n", - __FUNCTION__); + __func__); return -ENOMEM; } @@ -629,9 +643,9 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request, kfree(buf); if ((size > 2 && result != size) || result < 0) { - dev_err(&port->dev, "%s - Unable to send request, " + dbg("%s - Unable to send request, " "request=0x%x size=%d result=%d\n", - __FUNCTION__, request, size, result); + __func__, request, size, result); return -EPROTO; } @@ -654,16 +668,58 @@ static inline int cp210x_set_config_single(struct usb_serial_port *port, return cp210x_set_config(port, request, &data, 2); } -static int cp210x_open(struct usb_serial_port *port, struct file *filp) +/* + * 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, + struct file *filp) { struct usb_serial *serial = port->serial; int result; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); - if (cp210x_set_config_single(port, CP2101_UART, UART_ENABLE)) { + if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) { dev_err(&port->dev, "%s - Unable to enable UART\n", - __FUNCTION__); + __func__); return -EPROTO; } @@ -678,15 +734,17 @@ static int cp210x_open(struct usb_serial_port *port, struct file *filp) result = usb_submit_urb(port->read_urb, GFP_KERNEL); if (result) { dev_err(&port->dev, "%s - failed resubmitting read urb, " - "error %d\n", __FUNCTION__, result); + "error %d\n", __func__, result); return result; } /* Configure the termios structure */ - cp210x_get_termios(port); + cp210x_get_termios(tty, port); /* Set the DTR and RTS pins low */ - cp210x_tiocmset(port, NULL, TIOCM_DTR | TIOCM_RTS, 0); + cp210x_tiocmset_port(tty ? (struct usb_serial_port *) tty->driver_data + : port, + NULL, TIOCM_DTR | TIOCM_RTS, 0); return 0; } @@ -695,7 +753,7 @@ static void cp210x_cleanup(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); if (serial->dev) { /* shutdown any bulk reads that might be going on */ @@ -706,28 +764,33 @@ static void cp210x_cleanup(struct usb_serial_port *port) } } -static void cp210x_close(struct usb_serial_port *port, struct file *filp) +static void cp210x_close(struct usb_serial_port *port) { - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); /* shutdown our urbs */ - dbg("%s - shutting down urbs", __FUNCTION__); + dbg("%s - shutting down urbs", __func__); usb_kill_urb(port->write_urb); usb_kill_urb(port->read_urb); - cp210x_set_config_single(port, CP2101_UART, UART_DISABLE); + 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 usb_serial_port *port, struct file *file, +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", __FUNCTION__, port->number, cmd); switch (cmd) { case TIOCMGET: { - int result = cp210x_tiocmget(port, file); + int result = cp210x_tiocmget(tty, file); if (copy_to_user(&arg, &result, sizeof(int))) return -EFAULT; return 0; @@ -745,7 +808,7 @@ static int cp210x_ioctl(struct usb_serial_port *port, struct file *file, return -EFAULT; /* this looks wrong: TIOCMSET isn't going to work right */ - if (cp210x_tiocmset(port, file, cmd==TIOCMBIC ? 0 : val, + if (cp210x_tiocmset(tty, file, cmd==TIOCMBIC ? 0 : val, cmd==TIOCMBIC ? val : 0)) return -EFAULT; return 0; @@ -892,301 +955,292 @@ static int cp210x_ioctl(struct usb_serial_port *port, struct file *file, * 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 usb_serial_port *port) +static void cp210x_get_termios(struct tty_struct *tty, + struct usb_serial_port *port) { - unsigned int cflag, modem_ctl[4]; - int baud; - int bits; + unsigned int baud; - dbg("%s - port %d", __FUNCTION__, port->number); + if (tty) { + cp210x_get_termios_port(tty->driver_data, + &tty->termios->c_cflag, &baud); + tty_encode_baud_rate(tty, baud, baud); + } - if (!port->tty || !port->tty->termios) { - dbg("%s - no tty structures", __FUNCTION__); - return; + 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, CP2101_BAUDRATE, &baud, 2); + cp210x_get_config(port, CP210X_GET_BAUDDIV, &baud, 2); /* Convert to baudrate */ if (baud) - baud = BAUD_RATE_GEN_FREQ / baud; + baud = cp210x_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud); - dbg("%s - baud rate = %d", __FUNCTION__, baud); + dbg("%s - baud rate = %d", __func__, baud); + *baudp = baud; - tty_encode_baud_rate(port->tty, baud, baud); - cflag = port->tty->termios->c_cflag; + cflag = *cflagp; - cp210x_get_config(port, CP2101_BITS, &bits, 2); + 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", __FUNCTION__); - cflag |= CS5; - break; - case BITS_DATA_6: - dbg("%s - data bits = 6", __FUNCTION__); - cflag |= CS6; - break; - case BITS_DATA_7: - dbg("%s - data bits = 7", __FUNCTION__); - cflag |= CS7; - break; - case BITS_DATA_8: - dbg("%s - data bits = 8", __FUNCTION__); - cflag |= CS8; - break; - case BITS_DATA_9: - dbg("%s - data bits = 9 (not supported, " - "using 8 data bits)", __FUNCTION__); - cflag |= CS8; - bits &= ~BITS_DATA_MASK; - bits |= BITS_DATA_8; - cp210x_set_config(port, CP2101_BITS, &bits, 2); - break; - default: - dbg("%s - Unknown number of data bits, " - "using 8", __FUNCTION__); - cflag |= CS8; - bits &= ~BITS_DATA_MASK; - bits |= BITS_DATA_8; - cp210x_set_config(port, CP2101_BITS, &bits, 2); - break; + 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", __FUNCTION__); - cflag &= ~PARENB; - break; - case BITS_PARITY_ODD: - dbg("%s - parity = ODD", __FUNCTION__); - cflag |= (PARENB|PARODD); - break; - case BITS_PARITY_EVEN: - dbg("%s - parity = EVEN", __FUNCTION__); - cflag &= ~PARODD; - cflag |= PARENB; - break; - case BITS_PARITY_MARK: - dbg("%s - parity = MARK (not supported, " - "disabling parity)", __FUNCTION__); - cflag &= ~PARENB; - bits &= ~BITS_PARITY_MASK; - cp210x_set_config(port, CP2101_BITS, &bits, 2); - break; - case BITS_PARITY_SPACE: - dbg("%s - parity = SPACE (not supported, " - "disabling parity)", __FUNCTION__); - cflag &= ~PARENB; - bits &= ~BITS_PARITY_MASK; - cp210x_set_config(port, CP2101_BITS, &bits, 2); - break; - default: - dbg("%s - Unknown parity mode, " - "disabling parity", __FUNCTION__); - cflag &= ~PARENB; - bits &= ~BITS_PARITY_MASK; - cp210x_set_config(port, CP2101_BITS, &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", __FUNCTION__); - break; - case BITS_STOP_1_5: - dbg("%s - stop bits = 1.5 (not supported, " - "using 1 stop bit)", __FUNCTION__); - bits &= ~BITS_STOP_MASK; - cp210x_set_config(port, CP2101_BITS, &bits, 2); - break; - case BITS_STOP_2: - dbg("%s - stop bits = 2", __FUNCTION__); - cflag |= CSTOPB; - break; - default: - dbg("%s - Unknown number of stop bits, " - "using 1 stop bit", __FUNCTION__); - bits &= ~BITS_STOP_MASK; - cp210x_set_config(port, CP2101_BITS, &bits, 2); - break; + 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, CP2101_MODEMCTL, modem_ctl, 16); + cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); if (modem_ctl[0] & 0x0008) { - dbg("%s - flow control = CRTSCTS", __FUNCTION__); + dbg("%s - flow control = CRTSCTS", __func__); cflag |= CRTSCTS; } else { - dbg("%s - flow control = NONE", __FUNCTION__); + dbg("%s - flow control = NONE", __func__); cflag &= ~CRTSCTS; } - port->tty->termios->c_cflag = cflag; + *cflagp = cflag; } -static void cp210x_set_termios(struct usb_serial_port *port, - struct ktermios *old_termios) +static void cp210x_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old_termios) { unsigned int cflag, old_cflag; - int baud = 0, bits; + unsigned int baud = 0, bits; unsigned int modem_ctl[4]; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); - if (!port->tty || !port->tty->termios) { - dbg("%s - no tty structures", __FUNCTION__); + if (!tty) return; - } - port->tty->termios->c_cflag &= ~CMSPAR; - cflag = port->tty->termios->c_cflag; + tty->termios->c_cflag &= ~CMSPAR; + cflag = tty->termios->c_cflag; old_cflag = old_termios->c_cflag; - baud = tty_get_baud_rate(port->tty); + 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)) { - switch (baud) { - case 0: - case 600: - case 1200: - case 1800: - case 2400: - case 4800: - case 7200: - case 9600: - case 14400: - case 19200: - case 28800: - case 38400: - case 55854: - case 57600: - case 115200: - case 127117: - case 230400: - case 460800: - case 921600: - case 3686400: - break; - default: - baud = 9600; - break; - } - - if (baud) { - dbg("%s - Setting baud rate to %d baud", __FUNCTION__, - baud); - if (cp210x_set_config_single(port, CP2101_BAUDRATE, - (BAUD_RATE_GEN_FREQ / baud))) { - dev_err(&port->dev, "Baud rate requested not " - "supported by device\n"); - baud = tty_termios_baud_rate(old_termios); - } + 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\n"); + baud = tty_termios_baud_rate(old_termios); } } /* Report back the resulting baud rate */ - tty_encode_baud_rate(port->tty, baud, baud); + 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, CP2101_BITS, &bits, 2); + 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", __FUNCTION__); - break; - case CS6: - bits |= BITS_DATA_6; - dbg("%s - data bits = 6", __FUNCTION__); - break; - case CS7: - bits |= BITS_DATA_7; - dbg("%s - data bits = 7", __FUNCTION__); - break; - case CS8: - bits |= BITS_DATA_8; - dbg("%s - data bits = 8", __FUNCTION__); - break; - /*case CS9: - bits |= BITS_DATA_9; - dbg("%s - data bits = 9", __FUNCTION__); - break;*/ - default: - dev_err(&port->dev, "cp210x driver does not " + 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, CP2101_BITS, &bits, 2)) - dev_err(&port->dev, "Number of data bits requested " + 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, CP2101_BITS, &bits, 2); + 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", __FUNCTION__); + dbg("%s - parity = ODD", __func__); } else { bits |= BITS_PARITY_EVEN; - dbg("%s - parity = EVEN", __FUNCTION__); + dbg("%s - parity = EVEN", __func__); } } - if (cp210x_set_config(port, CP2101_BITS, &bits, 2)) - dev_err(&port->dev, "Parity mode not supported " + 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, CP2101_BITS, &bits, 2); + 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", __FUNCTION__); + dbg("%s - stop bits = 2", __func__); } else { bits |= BITS_STOP_1; - dbg("%s - stop bits = 1", __FUNCTION__); + dbg("%s - stop bits = 1", __func__); } - if (cp210x_set_config(port, CP2101_BITS, &bits, 2)) - dev_err(&port->dev, "Number of stop bits requested " + 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, CP2101_MODEMCTL, modem_ctl, 16); + cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", - __FUNCTION__, modem_ctl[0], modem_ctl[1], + __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", __FUNCTION__); + dbg("%s - flow control = CRTSCTS", __func__); } else { modem_ctl[0] &= ~0x7B; modem_ctl[0] |= 0x01; modem_ctl[1] |= 0x40; - dbg("%s - flow control = NONE", __FUNCTION__); + dbg("%s - flow control = NONE", __func__); } dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", - __FUNCTION__, modem_ctl[0], modem_ctl[1], + __func__, modem_ctl[0], modem_ctl[1], modem_ctl[2], modem_ctl[3]); - cp210x_set_config(port, CP2101_MODEMCTL, modem_ctl, 16); + cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); } } -static int cp210x_tiocmset(struct usb_serial_port *port, struct file *file, +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) { - int control = 0; + unsigned int control = 0; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); if (set & TIOCM_RTS) { control |= CONTROL_RTS; @@ -1205,19 +1259,20 @@ static int cp210x_tiocmset(struct usb_serial_port *port, struct file *file, control |= CONTROL_WRITE_DTR; } - dbg("%s - control = 0x%.4x", __FUNCTION__, control); - - return cp210x_set_config(port, CP2101_CONTROL, &control, 2); + dbg("%s - control = 0x%.4x", __func__, control); + return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); } -static int cp210x_tiocmget(struct usb_serial_port *port, struct file *file) +static int cp210x_tiocmget (struct tty_struct *tty, struct file *file) { - int control, result; + struct usb_serial_port *port = tty->driver_data; + unsigned int control; + int result; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); - cp210x_get_config(port, CP2101_CONTROL, &control, 1); + cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) |((control & CONTROL_RTS) ? TIOCM_RTS : 0) @@ -1226,42 +1281,42 @@ static int cp210x_tiocmget(struct usb_serial_port *port, struct file *file) |((control & CONTROL_RING)? TIOCM_RI : 0) |((control & CONTROL_DCD) ? TIOCM_CD : 0); - dbg("%s - control = 0x%.2x", __FUNCTION__, control); + dbg("%s - control = 0x%.2x", __func__, control); return result; } -static void cp210x_break_ctl(struct usb_serial_port *port, int break_state) +static void cp210x_break_ctl (struct tty_struct *tty, int break_state) { - int state; + struct usb_serial_port *port = tty->driver_data; + unsigned int state; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); if (break_state == 0) state = BREAK_OFF; else state = BREAK_ON; - dbg("%s - turning break %s", __FUNCTION__, - state==BREAK_OFF ? "off" : "on"); - cp210x_set_config(port, CP2101_BREAK, &state, 2); + 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) { - /* CP2101 buffers behave strangely unless device is reset */ + /* cp210x buffers behave strangely unless device is reset */ usb_reset_device(serial->dev); return 0; } -static void cp210x_shutdown(struct usb_serial *serial) +static void cp210x_disconnect(struct usb_serial *serial) { int i; - dbg("%s", __FUNCTION__); + dbg("%s", __func__); /* Stop reads and writes on all ports */ - for (i = 0; i < serial->num_ports; ++i) { + for (i = 0; i < serial->num_ports; ++i) cp210x_cleanup(serial->port[i]); - } } static int __init cp210x_init(void) @@ -1280,7 +1335,8 @@ static int __init cp210x_init(void) } /* Success */ - info(DRIVER_DESC " " DRIVER_VERSION); + printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" + DRIVER_DESC "\n"); return 0; } -- 2.39.2