patch-2.2.18 linux/drivers/usb/serial/ftdi_sio.c
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- Lines: 720
- Date:
Fri Sep 22 14:59:06 2000
- Orig file:
v2.2.17/drivers/usb/serial/ftdi_sio.c
- Orig date:
Thu Jan 1 01:00:00 1970
diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/usb/serial/ftdi_sio.c linux/drivers/usb/serial/ftdi_sio.c
@@ -0,0 +1,719 @@
+/*
+ * USB FTDI SIO driver
+ *
+ * Copyright (C) 1999, 2000
+ * Greg Kroah-Hartman (greg@kroah.com)
+ * Bill Ryder (bryder@sgi.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * See Documentation/usb/usb-serial.txt for more information on using this driver
+ *
+ * (09/11/2000) gkh
+ * Removed DEBUG #ifdefs with call to usb_serial_debug_data
+ *
+ * (07/19/2000) gkh
+ * Added module_init and module_exit functions to handle the fact that this
+ * driver is a loadable module now.
+ *
+ * (04/04/2000) Bill Ryder
+ * Fixed bugs in TCGET/TCSET ioctls (by removing them - they are
+ * handled elsewhere in the serial driver chain).
+ *
+ * (03/30/2000) Bill Ryder
+ * Implemented lots of ioctls
+ * Fixed a race condition in write
+ * Changed some dbg's to errs
+ *
+ * (03/26/2000) gkh
+ * Split driver up into device specific pieces.
+ *
+ */
+
+/* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
+/* Thanx to FTDI for so kindly providing details of the protocol required */
+/* to talk to the device */
+
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/errno.h>
+#include <linux/poll.h>
+#include <linux/init.h>
+#include <linux/malloc.h>
+#include <linux/fcntl.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/tty.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+
+#ifdef CONFIG_USB_SERIAL_DEBUG
+ #define DEBUG
+#else
+ #undef DEBUG
+#endif
+#include <linux/usb.h>
+
+#include "usb-serial.h"
+
+#include "ftdi_sio.h"
+
+#define FTDI_VENDOR_ID 0x0403
+#define FTDI_SIO_SERIAL_CONVERTER_ID 0x8372
+
+/* function prototypes for a FTDI serial converter */
+static int ftdi_sio_startup (struct usb_serial *serial);
+static int ftdi_sio_open (struct usb_serial_port *port, struct file *filp);
+static void ftdi_sio_close (struct usb_serial_port *port, struct file *filp);
+static int ftdi_sio_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
+static void ftdi_sio_write_bulk_callback (struct urb *urb);
+static void ftdi_sio_read_bulk_callback (struct urb *urb);
+static void ftdi_sio_set_termios (struct usb_serial_port *port, struct termios * old);
+static int ftdi_sio_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
+
+/* All of the device info needed for the FTDI SIO serial converter */
+static __u16 ftdi_vendor_id = FTDI_VENDOR_ID;
+static __u16 ftdi_sio_product_id = FTDI_SIO_SERIAL_CONVERTER_ID;
+struct usb_serial_device_type ftdi_sio_device = {
+ name: "FTDI SIO",
+ idVendor: &ftdi_vendor_id, /* the FTDI vendor ID */
+ idProduct: &ftdi_sio_product_id, /* the FTDI SIO product id */
+ needs_interrupt_in: MUST_HAVE_NOT, /* this device must not have an interrupt in endpoint */
+ needs_bulk_in: MUST_HAVE, /* this device must have a bulk in endpoint */
+ needs_bulk_out: MUST_HAVE, /* this device must have a bulk out endpoint */
+ num_interrupt_in: 0,
+ num_bulk_in: 1,
+ num_bulk_out: 1,
+ num_ports: 1,
+ open: ftdi_sio_open,
+ close: ftdi_sio_close,
+ write: ftdi_sio_write,
+ read_bulk_callback: ftdi_sio_read_bulk_callback,
+ write_bulk_callback: ftdi_sio_write_bulk_callback,
+ ioctl: ftdi_sio_ioctl,
+ set_termios: ftdi_sio_set_termios,
+ startup: ftdi_sio_startup,
+};
+
+
+/*
+ * ***************************************************************************
+ * FTDI SIO Serial Converter specific driver functions
+ * ***************************************************************************
+ *
+ * Bill Ryder bryder@sgi.com of Silicon Graphics, Inc. did the FTDI_SIO code
+ * Thanx to FTDI for so kindly providing details of the protocol required
+ * to talk to the device - http://www.ftdi.co.uk
+ *
+ * Tested as at this version - other stuff might work
+ * 23 March 2000
+ * Works:
+ * Baudrates - 9600, 38400,19200, 57600, 115200
+ * TIOCMBIC - TIOCM_DTR / TIOCM_RTS
+ * TIOCMBIS - TIOCM_DTR / TIOCM_RTS
+ * TIOCMSET - DTR on/RTSon / DTR off, RTS off
+ * no parity:CS8 even parity:CS7 odd parity:CS7
+ * CRTSCTS flow control
+ *
+ * Pilot-xfer zillions of times
+ *
+ * cu works with dir option
+ *
+ * Not Tested (ie might not work):
+ * xon/xoff flow control
+ * ppp (modem handling in general)
+ *
+ * KNOWN BUGS:
+ * Multiple Opens
+ * ==============
+ * Seems to have problem when opening an already open port,
+ * Get I/O error on first attempt, then it lets you in.
+ * Need to do proper usage counting - keep registered callbacks for first opener.
+ *
+ * Reproduce with:
+ * cu -l /dev/ttyUSB0 dir
+ * whilst cu is running do:
+ * stty -a < /dev/ttyUSB0
+ *
+ * from stty get: 'bash: /dev/ttyUSB0: Invalid argument '
+ * from cu get
+ * write: Invalid argument
+ *
+ * Initialisation Problem
+ * ======================
+ * Pilot transfer required me to run the serial_loopback program before it would work.
+ * Still working on this. See the webpage http://reality.sgi.com/bryder_wellington/ftdi_sio
+ *
+ */
+
+#define WDR_TIMEOUT (HZ * 5 ) /* default urb timeout */
+
+/* do some startup allocations not currently performed by usb_serial_probe() */
+static int ftdi_sio_startup (struct usb_serial *serial)
+{
+ init_waitqueue_head(&serial->port[0].write_wait);
+
+ return (0);
+}
+
+static int ftdi_sio_open (struct usb_serial_port *port, struct file *filp)
+{ /* ftdi_sio_open */
+ struct termios tmp_termios;
+ struct usb_serial *serial = port->serial;
+ char buf[1]; /* Needed for the usb_control_msg I think */
+
+ dbg("ftdi_sio_open port %d", port->number);
+
+ /* FIXME - multiple concurrent opens cause trouble */
+ if (port->active) {
+ err ("port already open");
+ return -EINVAL;
+ }
+ port->active = 1; /* FIXME - For multiple open this should increment */
+
+ /* See ftdi_sio.h for description of what is reset */
+ usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
+ FTDI_SIO_RESET_SIO,
+ 0, buf, 0, WDR_TIMEOUT);
+
+ /* Setup termios */
+ port->tty->termios->c_cflag =
+ B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+
+
+ ftdi_sio_set_termios(port, &tmp_termios);
+
+ /* Disable flow control */
+ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST,
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
+ 0, 0,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("error from flowcontrol urb");
+ return(-EINVAL);
+ }
+
+ /* Turn on RTS and DTR since we are not flow controlling*/
+ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ (unsigned)FTDI_SIO_SET_DTR_HIGH, 0,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("Error from DTR HIGH urb");
+ }
+ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ (unsigned)FTDI_SIO_SET_RTS_HIGH, 0,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("Error from RTS HIGH urb");
+ }
+
+ /*Start reading from the device*/
+ if (usb_submit_urb(port->read_urb))
+ err("usb_submit_urb(read bulk) failed");
+
+ return (0);
+} /* ftdi_sio_open */
+
+
+static void ftdi_sio_close (struct usb_serial_port *port, struct file *filp)
+{ /* ftdi_sio_close */
+ struct usb_serial *serial = port->serial;
+ unsigned int c_cflag = port->tty->termios->c_cflag;
+ char buf[1];
+
+ dbg("ftdi_sio_close port %d", port->number);
+
+ if (c_cflag & HUPCL){
+ /* Disable flow control */
+ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST,
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
+ 0, 0,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("error from flowcontrol urb");
+ }
+
+ /* drop DTR */
+ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ (unsigned)FTDI_SIO_SET_DTR_LOW, 0,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("Error from DTR LOW urb");
+ }
+ /* drop RTS */
+ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ (unsigned)FTDI_SIO_SET_RTS_LOW, 0,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("Error from RTS LOW urb");
+ }
+ }
+
+ /* shutdown our bulk reads and writes */
+ usb_unlink_urb (port->write_urb);
+ usb_unlink_urb (port->read_urb);
+ port->active = 0;
+} /* ftdi_sio_close */
+
+
+
+/* The ftdi_sio requires the first byte to have:
+ * B0 1
+ * B1 0
+ * B2..7 length of message excluding byte 0
+ */
+static int ftdi_sio_write (struct usb_serial_port *port, int from_user,
+ const unsigned char *buf, int count)
+{ /* ftdi_sio_write */
+ struct usb_serial *serial = port->serial;
+ const int data_offset = 1;
+ int rc;
+ DECLARE_WAITQUEUE(wait, current);
+
+ dbg("ftdi_sio_serial_write port %d, %d bytes", port->number, count);
+
+ if (count == 0) {
+ err("write request of 0 bytes");
+ return 0;
+ }
+
+ /* only do something if we have a bulk out endpoint */
+ if (serial->num_bulk_out) {
+ unsigned char *first_byte = port->write_urb->transfer_buffer;
+
+ /* Was seeing a race here, got a read callback, then write callback before
+ hitting interuptible_sleep_on - so wrapping in add_wait_queue stuff */
+
+ add_wait_queue(&port->write_wait, &wait);
+ set_current_state (TASK_INTERRUPTIBLE);
+ while (port->write_urb->status == -EINPROGRESS) {
+ dbg("ftdi_sio - write in progress - retrying");
+ if (0 /* file->f_flags & O_NONBLOCK */) {
+ rc = -EAGAIN;
+ goto err;
+ }
+ if (signal_pending(current)) {
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&port->write_wait, &wait);
+ rc = -ERESTARTSYS;
+ goto err;
+ }
+ schedule();
+ }
+ remove_wait_queue(&port->write_wait, &wait);
+ set_current_state(TASK_RUNNING);
+
+ count += data_offset;
+ count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
+ if (count == 0) {
+ return 0;
+ }
+
+ /* Copy in the data to send */
+ if (from_user) {
+ copy_from_user(port->write_urb->transfer_buffer + data_offset ,
+ buf, count - data_offset );
+ }
+ else {
+ memcpy(port->write_urb->transfer_buffer + data_offset,
+ buf, count - data_offset );
+ }
+
+ /* Write the control byte at the front of the packet*/
+ first_byte = port->write_urb->transfer_buffer;
+ *first_byte = 1 | ((count-data_offset) << 2) ;
+
+ dbg("Bytes: %d, Control Byte: 0o%03o",count, first_byte[0]);
+ usb_serial_debug_data (__FILE__, __FUNCTION__, count, first_byte);
+
+ /* send the data out the bulk port */
+ port->write_urb->transfer_buffer_length = count;
+
+ if (usb_submit_urb(port->write_urb))
+ err("usb_submit_urb(write bulk) failed");
+
+ dbg("write returning: %d", count - data_offset);
+ return (count - data_offset);
+ }
+
+ /* no bulk out, so return 0 bytes written */
+ return 0;
+ err: /* error exit */
+ return(rc);
+} /* ftdi_sio_write */
+
+static void ftdi_sio_write_bulk_callback (struct urb *urb)
+{
+ struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+ struct usb_serial *serial;
+ struct tty_struct *tty = port->tty;
+
+ dbg("ftdi_sio_write_bulk_callback");
+
+ if (port_paranoia_check (port, "ftdi_sio_write_bulk_callback")) {
+ return;
+ }
+
+ serial = port->serial;
+ if (serial_paranoia_check (serial, "ftdi_sio_write_bulk_callback")) {
+ return;
+ }
+
+ if (urb->status) {
+ dbg("nonzero write bulk status received: %d", urb->status);
+ return;
+ }
+
+ wake_up_interruptible(&port->write_wait);
+ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup)
+ (tty->ldisc.write_wakeup)(tty);
+
+ wake_up_interruptible(&tty->write_wait);
+
+ return;
+} /* ftdi_sio_write_bulk_callback */
+
+static void ftdi_sio_read_bulk_callback (struct urb *urb)
+{ /* ftdi_sio_serial_buld_callback */
+ struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+ struct usb_serial *serial;
+ struct tty_struct *tty = port->tty ;
+ unsigned char *data = urb->transfer_buffer;
+
+ const int data_offset = 2;
+ int i;
+
+ dbg("ftdi_sio read callback");
+
+ if (port_paranoia_check (port, "ftdi_sio_read_bulk_callback")) {
+ return;
+ }
+
+ serial = port->serial;
+ if (serial_paranoia_check (serial, "ftdi_sio_read_bulk_callback")) {
+ return;
+ }
+
+ /* TO DO -- check for hung up line and handle appropriately: */
+ /* send hangup (need to find out how to do this) */
+
+
+ if (urb->status) {
+ /* This will happen at close every time so it is a dbg not an err */
+ dbg("nonzero read bulk status received: %d", urb->status);
+ return;
+ }
+
+ if (urb->actual_length > 2) {
+ usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data);
+ } else {
+ dbg("Just status");
+ }
+
+ if (urb->actual_length > data_offset) {
+ for (i = data_offset ; i < urb->actual_length ; ++i) {
+ tty_insert_flip_char(tty, data[i], 0);
+ }
+ tty_flip_buffer_push(tty);
+ }
+
+ /* Continue trying to always read */
+ if (usb_submit_urb(urb))
+ err("failed resubmitting read urb");
+
+ return;
+} /* ftdi_sio_serial_read_bulk_callback */
+
+/* As I understand this - old_termios contains the original termios settings */
+/* and tty->termios contains the new setting to be used */
+/* */
+/* WARNING: set_termios calls this with old_termios in kernel space */
+
+static void ftdi_sio_set_termios (struct usb_serial_port *port, struct termios *old_termios)
+{ /* ftdi_sio_set_termios */
+ struct usb_serial *serial = port->serial;
+ unsigned int cflag = port->tty->termios->c_cflag;
+ __u16 urb_value; /* Will hold the new flags */
+ char buf[1]; /* Perhaps I should dynamically alloc this? */
+
+ dbg("ftdi_sio_set_termios port %d", port->number);
+
+
+ /* FIXME -For this cut I don't care if the line is really changing or
+ not - so just do the change regardless - should be able to
+ compare old_termios and tty->termios */
+ /* NOTE These routines can get interrupted by
+ ftdi_sio_read_bulk_callback - need to examine what this
+ means - don't see any problems yet */
+
+ /* Set number of data bits, parity, stop bits */
+
+ urb_value = 0;
+ urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
+ FTDI_SIO_SET_DATA_STOP_BITS_1);
+ urb_value |= (cflag & PARENB ?
+ (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
+ FTDI_SIO_SET_DATA_PARITY_EVEN) :
+ FTDI_SIO_SET_DATA_PARITY_NONE);
+ if (cflag & CSIZE) {
+ switch (cflag & CSIZE) {
+ case CS5: urb_value |= 5; dbg("Setting CS5"); break;
+ case CS6: urb_value |= 6; dbg("Setting CS6"); break;
+ case CS7: urb_value |= 7; dbg("Setting CS7"); break;
+ case CS8: urb_value |= 8; dbg("Setting CS8"); break;
+ default:
+ err("CSIZE was set but not CS5-CS8");
+ }
+ }
+ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_DATA_REQUEST,
+ FTDI_SIO_SET_DATA_REQUEST_TYPE,
+ urb_value , 0,
+ buf, 0, 100) < 0) {
+ err("FAILED to set databits/stopbits/parity");
+ }
+
+ /* Now do the baudrate */
+
+ switch(cflag & CBAUD){
+ case B0: break; /* Handled below */
+ case B300: urb_value = ftdi_sio_b300; dbg("Set to 300"); break;
+ case B600: urb_value = ftdi_sio_b600; dbg("Set to 600") ; break;
+ case B1200: urb_value = ftdi_sio_b1200; dbg("Set to 1200") ; break;
+ case B2400: urb_value = ftdi_sio_b2400; dbg("Set to 2400") ; break;
+ case B4800: urb_value = ftdi_sio_b4800; dbg("Set to 4800") ; break;
+ case B9600: urb_value = ftdi_sio_b9600; dbg("Set to 9600") ; break;
+ case B19200: urb_value = ftdi_sio_b19200; dbg("Set to 19200") ; break;
+ case B38400: urb_value = ftdi_sio_b38400; dbg("Set to 38400") ; break;
+ case B57600: urb_value = ftdi_sio_b57600; dbg("Set to 57600") ; break;
+ case B115200: urb_value = ftdi_sio_b115200; dbg("Set to 115200") ; break;
+ default: dbg("FTDI_SIO does not support the baudrate requested");
+ /* FIXME - how to return an error for this? */ break;
+ }
+ if ((cflag & CBAUD) == B0 ) {
+ /* Disable flow control */
+ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST,
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
+ 0, 0,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("error from disable flowcontrol urb");
+ }
+ /* Drop RTS and DTR */
+ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ (unsigned)FTDI_SIO_SET_DTR_LOW, 0,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("Error from DTR LOW urb");
+ }
+ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ (unsigned)FTDI_SIO_SET_RTS_LOW, 0,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("Error from RTS LOW urb");
+ }
+
+ } else {
+ if (usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_BAUDRATE_REQUEST,
+ FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
+ urb_value, 0,
+ buf, 0, 100) < 0) {
+ err("urb failed to set baurdrate");
+ }
+ }
+ /* Set flow control */
+ /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
+ if (cflag & CRTSCTS) {
+ dbg("Setting to CRTSCTS flow control");
+ if (usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST,
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
+ 0 , FTDI_SIO_RTS_CTS_HS,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("urb failed to set to rts/cts flow control");
+ }
+
+ } else {
+ /* CHECK Assuming XON/XOFF handled by stack - not by device */
+ /* Disable flow control */
+ dbg("Turning off hardware flow control");
+ if (usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST,
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
+ 0, 0,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("urb failed to clear flow control");
+ }
+
+ }
+ return;
+} /* ftdi_sio_set_termios */
+
+static int ftdi_sio_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
+{
+ struct usb_serial *serial = port->serial;
+ __u16 urb_value=0; /* Will hold the new flags */
+ char buf[1];
+ int ret, mask;
+
+ dbg("ftdi_sio_ioctl - cmd 0x%04x", cmd);
+
+ /* Based on code from acm.c and others */
+ switch (cmd) {
+
+ case TIOCMGET:
+ dbg("TIOCMGET");
+ /* Request the status from the device */
+ if ((ret = usb_control_msg(serial->dev,
+ usb_rcvctrlpipe(serial->dev, 0),
+ FTDI_SIO_GET_MODEM_STATUS_REQUEST,
+ FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
+ 0, 0,
+ buf, 1, HZ * 5)) < 0 ) {
+ dbg("Get not get modem status of device");
+ return(ret);
+ }
+
+ return put_user((buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
+ (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
+ (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
+ (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0),
+ (unsigned long *) arg);
+ break;
+
+ case TIOCMSET: /* Turns on and off the lines as specified by the mask */
+ dbg("TIOCMSET");
+ if ((ret = get_user(mask, (unsigned long *) arg))) return ret;
+ urb_value = ((mask & TIOCM_DTR) ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW);
+ if ((ret = usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ urb_value , 0,
+ buf, 0, WDR_TIMEOUT)) < 0){
+ err("Urb to set DTR failed");
+ return(ret);
+ }
+ urb_value = ((mask & TIOCM_RTS) ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW);
+ if ((ret = usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ urb_value , 0,
+ buf, 0, WDR_TIMEOUT)) < 0){
+ err("Urb to set RTS failed");
+ return(ret);
+ }
+ break;
+
+ case TIOCMBIS: /* turns on (Sets) the lines as specified by the mask */
+ dbg("TIOCMBIS");
+ if ((ret = get_user(mask, (unsigned long *) arg))) return ret;
+ if (mask & TIOCM_DTR){
+ if ((ret = usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ FTDI_SIO_SET_DTR_HIGH , 0,
+ buf, 0, WDR_TIMEOUT)) < 0){
+ err("Urb to set DTR failed");
+ return(ret);
+ }
+ }
+ if (mask & TIOCM_RTS) {
+ if ((ret = usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ FTDI_SIO_SET_RTS_HIGH , 0,
+ buf, 0, WDR_TIMEOUT)) < 0){
+ err("Urb to set RTS failed");
+ return(ret);
+ }
+ }
+ break;
+
+ case TIOCMBIC: /* turns off (Clears) the lines as specified by the mask */
+ dbg("TIOCMBIC");
+ if ((ret = get_user(mask, (unsigned long *) arg))) return ret;
+ if (mask & TIOCM_DTR){
+ if ((ret = usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ FTDI_SIO_SET_DTR_LOW , 0,
+ buf, 0, WDR_TIMEOUT)) < 0){
+ err("Urb to unset DTR failed");
+ return(ret);
+ }
+ }
+ if (mask & TIOCM_RTS) {
+ if ((ret = usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ FTDI_SIO_SET_RTS_LOW , 0,
+ buf, 0, WDR_TIMEOUT)) < 0){
+ err("Urb to unset RTS failed");
+ return(ret);
+ }
+ }
+ break;
+
+ /*
+ * I had originally implemented TCSET{A,S}{,F,W} and
+ * TCGET{A,S} here separately, however when testing I
+ * found that the higher layers actually do the termios
+ * conversions themselves and pass the call onto
+ * ftdi_sio_set_termios.
+ *
+ */
+
+ default:
+ /* This is not an error - turns out the higher layers will do
+ * some ioctls itself (see comment above)
+ */
+ dbg("ftdi_sio ioctl arg not supported - it was 0x%04x",cmd);
+ return(-ENOIOCTLCMD);
+ break;
+ }
+ dbg("ftdi_sio_ioctl returning 0");
+ return 0;
+} /* ftdi_sio_ioctl */
+
+
+static int __init ftdi_sio_init (void)
+{
+ usb_serial_register (&ftdi_sio_device);
+ return 0;
+}
+
+
+static void __exit ftdi_sio_exit (void)
+{
+ usb_serial_deregister (&ftdi_sio_device);
+}
+
+
+module_init(ftdi_sio_init);
+module_exit(ftdi_sio_exit);
+
+MODULE_AUTHOR("Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>");
+MODULE_DESCRIPTION("USB FTDI SIO driver");
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)