belkin_sa.c
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上传日期:2013-02-24
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- /*
- * Belkin USB Serial Adapter Driver
- *
- * Copyright (C) 2000
- * William Greathouse (wgreathouse@smva.com)
- *
- * This program is largely derived from work by the linux-usb group
- * and associated source files. Please see the usb/serial files for
- * individual credits and copyrights.
- *
- * 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
- *
- * TODO:
- * -- Add true modem contol line query capability. Currently we track the
- * states reported by the interrupt and the states we request.
- * -- Add error reporting back to application for UART error conditions.
- * Just point me at how to implement this and I'll do it. I've put the
- * framework in, but haven't analyzed the "tty_flip" interface yet.
- * -- Add support for flush commands
- * -- Add everything that is missing :)
- *
- * 30-May-2001 gkh
- * switched from using spinlock to a semaphore, which fixes lots of problems.
- *
- * 08-Apr-2001 gb
- * - Identify version on module load.
- *
- * 12-Mar-2001 gkh
- * - Added support for the GoHubs GO-COM232 device which is the same as the
- * Peracom device.
- *
- * 06-Nov-2000 gkh
- * - Added support for the old Belkin and Peracom devices.
- * - Made the port able to be opened multiple times.
- * - Added some defaults incase the line settings are things these devices
- * can't support.
- *
- * 18-Oct-2000 William Greathouse
- * Released into the wild (linux-usb-devel)
- *
- * 17-Oct-2000 William Greathouse
- * Add code to recognize firmware version and set hardware flow control
- * appropriately. Belkin states that firmware prior to 3.05 does not
- * operate correctly in hardware handshake mode. I have verified this
- * on firmware 2.05 -- for both RTS and DTR input flow control, the control
- * line is not reset. The test performed by the Belkin Win* driver is
- * to enable hardware flow control for firmware 2.06 or greater and
- * for 1.00 or prior. I am only enabling for 2.06 or greater.
- *
- * 12-Oct-2000 William Greathouse
- * First cut at supporting Belkin USB Serial Adapter F5U103
- * I did not have a copy of the original work to support this
- * adapter, so pardon any stupid mistakes. All of the information
- * I am using to write this driver was acquired by using a modified
- * UsbSnoop on Windows2000 and from examining the other USB drivers.
- */
- #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/slab.h>
- #include <linux/fcntl.h>
- #include <linux/tty.h>
- #include <linux/tty_driver.h>
- #include <linux/tty_flip.h>
- #include <linux/module.h>
- #include <linux/spinlock.h>
- #include <linux/usb.h>
- #ifdef CONFIG_USB_SERIAL_DEBUG
- static int debug = 1;
- #else
- static int debug;
- #endif
- #include "usb-serial.h"
- #include "belkin_sa.h"
- /*
- * Version Information
- */
- #define DRIVER_VERSION "v1.1"
- #define DRIVER_AUTHOR "William Greathouse <wgreathouse@smva.com>"
- #define DRIVER_DESC "USB Belkin Serial converter driver"
- /* function prototypes for a Belkin USB Serial Adapter F5U103 */
- static int belkin_sa_startup (struct usb_serial *serial);
- static void belkin_sa_shutdown (struct usb_serial *serial);
- static int belkin_sa_open (struct usb_serial_port *port, struct file *filp);
- static void belkin_sa_close (struct usb_serial_port *port, struct file *filp);
- static void belkin_sa_read_int_callback (struct urb *urb);
- static void belkin_sa_set_termios (struct usb_serial_port *port, struct termios * old);
- static int belkin_sa_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
- static void belkin_sa_break_ctl (struct usb_serial_port *port, int break_state );
- static __devinitdata struct usb_device_id id_table_combined [] = {
- { USB_DEVICE(BELKIN_SA_VID, BELKIN_SA_PID) },
- { USB_DEVICE(BELKIN_OLD_VID, BELKIN_OLD_PID) },
- { USB_DEVICE(PERACOM_VID, PERACOM_PID) },
- { USB_DEVICE(GOHUBS_VID, GOHUBS_PID) },
- { USB_DEVICE(BELKIN_DOCKSTATION_VID, BELKIN_DOCKSTATION_PID) },
- { } /* Terminating entry */
- };
- static __devinitdata struct usb_device_id belkin_dockstation_table [] = {
- { USB_DEVICE(BELKIN_DOCKSTATION_VID, BELKIN_DOCKSTATION_PID) },
- { } /* Terminating entry */
- };
- static __devinitdata struct usb_device_id belkin_sa_table [] = {
- { USB_DEVICE(BELKIN_SA_VID, BELKIN_SA_PID) },
- { } /* Terminating entry */
- };
- static __devinitdata struct usb_device_id belkin_old_table [] = {
- { USB_DEVICE(BELKIN_OLD_VID, BELKIN_OLD_PID) },
- { } /* Terminating entry */
- };
- static __devinitdata struct usb_device_id peracom_table [] = {
- { USB_DEVICE(PERACOM_VID, PERACOM_PID) },
- { } /* Terminating entry */
- };
- static __devinitdata struct usb_device_id gocom232_table [] = {
- { USB_DEVICE(GOHUBS_VID, GOHUBS_PID) },
- { } /* Terminating entry */
- };
- MODULE_DEVICE_TABLE (usb, id_table_combined);
- /* All of the device info needed for the Belkin dockstation serial converter */
- static struct usb_serial_device_type belkin_dockstation_device = {
- name: "Belkin F5U120-PC USB Serial Adapter",
- id_table: belkin_dockstation_table, /* the Belkin F5U103 device */
- needs_interrupt_in: MUST_HAVE, /* this device must 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: 1,
- num_bulk_in: 1,
- num_bulk_out: 1,
- num_ports: 1,
- open: belkin_sa_open,
- close: belkin_sa_close,
- read_int_callback: belkin_sa_read_int_callback, /* How we get the status info */
- ioctl: belkin_sa_ioctl,
- set_termios: belkin_sa_set_termios,
- break_ctl: belkin_sa_break_ctl,
- startup: belkin_sa_startup,
- shutdown: belkin_sa_shutdown,
- };
- /* All of the device info needed for the Belkin serial converter */
- static struct usb_serial_device_type belkin_sa_device = {
- name: "Belkin F5U103 USB Serial Adapter",
- id_table: belkin_sa_table, /* the Belkin F5U103 device */
- needs_interrupt_in: MUST_HAVE, /* this device must 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: 1,
- num_bulk_in: 1,
- num_bulk_out: 1,
- num_ports: 1,
- open: belkin_sa_open,
- close: belkin_sa_close,
- read_int_callback: belkin_sa_read_int_callback, /* How we get the status info */
- ioctl: belkin_sa_ioctl,
- set_termios: belkin_sa_set_termios,
- break_ctl: belkin_sa_break_ctl,
- startup: belkin_sa_startup,
- shutdown: belkin_sa_shutdown,
- };
- /* This driver also supports the "old" school Belkin single port adaptor */
- static struct usb_serial_device_type belkin_old_device = {
- name: "Belkin USB Serial Adapter",
- id_table: belkin_old_table, /* the old Belkin device */
- needs_interrupt_in: MUST_HAVE, /* this device must 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: 1,
- num_bulk_in: 1,
- num_bulk_out: 1,
- num_ports: 1,
- open: belkin_sa_open,
- close: belkin_sa_close,
- read_int_callback: belkin_sa_read_int_callback, /* How we get the status info */
- ioctl: belkin_sa_ioctl,
- set_termios: belkin_sa_set_termios,
- break_ctl: belkin_sa_break_ctl,
- startup: belkin_sa_startup,
- shutdown: belkin_sa_shutdown,
- };
- /* this driver also works for the Peracom single port adapter */
- static struct usb_serial_device_type peracom_device = {
- name: "Peracom single port USB Serial Adapter",
- id_table: peracom_table, /* the Peracom device */
- needs_interrupt_in: MUST_HAVE, /* this device must 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: 1,
- num_bulk_in: 1,
- num_bulk_out: 1,
- num_ports: 1,
- open: belkin_sa_open,
- close: belkin_sa_close,
- read_int_callback: belkin_sa_read_int_callback, /* How we get the status info */
- ioctl: belkin_sa_ioctl,
- set_termios: belkin_sa_set_termios,
- break_ctl: belkin_sa_break_ctl,
- startup: belkin_sa_startup,
- shutdown: belkin_sa_shutdown,
- };
- /* the GoHubs Go-COM232 device is the same as the Peracom single port adapter */
- static struct usb_serial_device_type gocom232_device = {
- name: "GO-COM232 USB Serial Converter",
- id_table: gocom232_table, /* the GO-COM232 device */
- needs_interrupt_in: MUST_HAVE, /* this device must 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: 1,
- num_bulk_in: 1,
- num_bulk_out: 1,
- num_ports: 1,
- open: belkin_sa_open,
- close: belkin_sa_close,
- read_int_callback: belkin_sa_read_int_callback, /* How we get the status info */
- ioctl: belkin_sa_ioctl,
- set_termios: belkin_sa_set_termios,
- break_ctl: belkin_sa_break_ctl,
- startup: belkin_sa_startup,
- shutdown: belkin_sa_shutdown,
- };
- struct belkin_sa_private {
- unsigned long control_state;
- unsigned char last_lsr;
- unsigned char last_msr;
- int bad_flow_control;
- };
- /*
- * ***************************************************************************
- * Belkin USB Serial Adapter F5U103 specific driver functions
- * ***************************************************************************
- */
- #define WDR_TIMEOUT (HZ * 5 ) /* default urb timeout */
- /* assumes that struct usb_serial *serial is available */
- #define BSA_USB_CMD(c,v) usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- (c), BELKIN_SA_SET_REQUEST_TYPE,
- (v), 0, NULL, 0, WDR_TIMEOUT)
- /* do some startup allocations not currently performed by usb_serial_probe() */
- static int belkin_sa_startup (struct usb_serial *serial)
- {
- struct usb_device *dev = serial->dev;
- struct belkin_sa_private *priv;
- /* allocate the private data structure */
- serial->port->private = kmalloc(sizeof(struct belkin_sa_private), GFP_KERNEL);
- if (!serial->port->private)
- return (-1); /* error */
- priv = (struct belkin_sa_private *)serial->port->private;
- /* set initial values for control structures */
- priv->control_state = 0;
- priv->last_lsr = 0;
- priv->last_msr = 0;
- /* see comments at top of file */
- priv->bad_flow_control = (dev->descriptor.bcdDevice <= 0x0206) ? 1 : 0;
- info("bcdDevice: %04x, bfc: %d", dev->descriptor.bcdDevice, priv->bad_flow_control);
- init_waitqueue_head(&serial->port->write_wait);
-
- return (0);
- }
- static void belkin_sa_shutdown (struct usb_serial *serial)
- {
- int i;
-
- dbg (__FUNCTION__);
- /* stop reads and writes on all ports */
- for (i=0; i < serial->num_ports; ++i) {
- while (serial->port[i].open_count > 0) {
- belkin_sa_close (&serial->port[i], NULL);
- }
- /* My special items, the standard routines free my urbs */
- if (serial->port[i].private)
- kfree(serial->port[i].private);
- }
- }
- static int belkin_sa_open (struct usb_serial_port *port, struct file *filp)
- {
- int retval = 0;
- dbg(__FUNCTION__" port %d", port->number);
- down (&port->sem);
-
- ++port->open_count;
- MOD_INC_USE_COUNT;
-
- if (!port->active) {
- port->active = 1;
- /*Start reading from the device*/
- /* TODO: Look at possibility of submitting mulitple URBs to device to
- * enhance buffering. Win trace shows 16 initial read URBs.
- */
- port->read_urb->dev = port->serial->dev;
- retval = usb_submit_urb(port->read_urb);
- if (retval) {
- err("usb_submit_urb(read bulk) failed");
- goto exit;
- }
- port->interrupt_in_urb->dev = port->serial->dev;
- retval = usb_submit_urb(port->interrupt_in_urb);
- if (retval)
- err(" usb_submit_urb(read int) failed");
- }
-
- exit:
- up (&port->sem);
- return retval;
- } /* belkin_sa_open */
- static void belkin_sa_close (struct usb_serial_port *port, struct file *filp)
- {
- struct usb_serial *serial;
- if (port_paranoia_check (port, __FUNCTION__))
- return;
- serial = get_usb_serial (port, __FUNCTION__);
- if (!serial)
- return;
- dbg(__FUNCTION__" port %d", port->number);
- down (&port->sem);
- --port->open_count;
- if (port->open_count <= 0) {
- if (serial->dev) {
- /* shutdown our bulk reads and writes */
- usb_unlink_urb (port->write_urb);
- usb_unlink_urb (port->read_urb);
- usb_unlink_urb (port->interrupt_in_urb);
- }
- port->active = 0;
- }
-
- up (&port->sem);
- MOD_DEC_USE_COUNT;
- } /* belkin_sa_close */
- static void belkin_sa_read_int_callback (struct urb *urb)
- {
- struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
- struct belkin_sa_private *priv;
- struct usb_serial *serial;
- unsigned char *data = urb->transfer_buffer;
- /* the urb might have been killed. */
- if (urb->status)
- return;
-
- if (port_paranoia_check (port, __FUNCTION__)) return;
- serial = port->serial;
- if (serial_paranoia_check (serial, __FUNCTION__)) return;
-
- usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data);
- /* Handle known interrupt data */
- /* ignore data[0] and data[1] */
- priv = (struct belkin_sa_private *)port->private;
- priv->last_msr = data[BELKIN_SA_MSR_INDEX];
-
- /* Record Control Line states */
- if (priv->last_msr & BELKIN_SA_MSR_DSR)
- priv->control_state |= TIOCM_DSR;
- else
- priv->control_state &= ~TIOCM_DSR;
- if (priv->last_msr & BELKIN_SA_MSR_CTS)
- priv->control_state |= TIOCM_CTS;
- else
- priv->control_state &= ~TIOCM_CTS;
- if (priv->last_msr & BELKIN_SA_MSR_RI)
- priv->control_state |= TIOCM_RI;
- else
- priv->control_state &= ~TIOCM_RI;
- if (priv->last_msr & BELKIN_SA_MSR_CD)
- priv->control_state |= TIOCM_CD;
- else
- priv->control_state &= ~TIOCM_CD;
- /* Now to report any errors */
- priv->last_lsr = data[BELKIN_SA_LSR_INDEX];
- #if 0
- /*
- * fill in the flip buffer here, but I do not know the relation
- * to the current/next receive buffer or characters. I need
- * to look in to this before committing any code.
- */
- if (priv->last_lsr & BELKIN_SA_LSR_ERR) {
- tty = port->tty;
- /* Overrun Error */
- if (priv->last_lsr & BELKIN_SA_LSR_OE) {
- }
- /* Parity Error */
- if (priv->last_lsr & BELKIN_SA_LSR_PE) {
- }
- /* Framing Error */
- if (priv->last_lsr & BELKIN_SA_LSR_FE) {
- }
- /* Break Indicator */
- if (priv->last_lsr & BELKIN_SA_LSR_BI) {
- }
- }
- #endif
- /* INT urbs are automatically re-submitted */
- }
- static void belkin_sa_set_termios (struct usb_serial_port *port, struct termios *old_termios)
- {
- struct usb_serial *serial = port->serial;
- struct belkin_sa_private *priv = (struct belkin_sa_private *)port->private;
- unsigned int iflag = port->tty->termios->c_iflag;
- unsigned int cflag = port->tty->termios->c_cflag;
- unsigned int old_iflag = old_termios->c_iflag;
- unsigned int old_cflag = old_termios->c_cflag;
- __u16 urb_value = 0; /* Will hold the new flags */
-
- /* Set the baud rate */
- if( (cflag&CBAUD) != (old_cflag&CBAUD) ) {
- /* reassert DTR and (maybe) RTS on transition from B0 */
- if( (old_cflag&CBAUD) == B0 ) {
- priv->control_state |= (TIOCM_DTR|TIOCM_RTS);
- if (BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, 1) < 0)
- err("Set DTR error");
- /* don't set RTS if using hardware flow control */
- if (!(old_cflag&CRTSCTS) )
- if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, 1) < 0)
- err("Set RTS error");
- }
- switch(cflag & CBAUD) {
- case B0: /* handled below */ break;
- case B300: urb_value = BELKIN_SA_BAUD(300); break;
- case B600: urb_value = BELKIN_SA_BAUD(600); break;
- case B1200: urb_value = BELKIN_SA_BAUD(1200); break;
- case B2400: urb_value = BELKIN_SA_BAUD(2400); break;
- case B4800: urb_value = BELKIN_SA_BAUD(4800); break;
- case B9600: urb_value = BELKIN_SA_BAUD(9600); break;
- case B19200: urb_value = BELKIN_SA_BAUD(19200); break;
- case B38400: urb_value = BELKIN_SA_BAUD(38400); break;
- case B57600: urb_value = BELKIN_SA_BAUD(57600); break;
- case B115200: urb_value = BELKIN_SA_BAUD(115200); break;
- case B230400: urb_value = BELKIN_SA_BAUD(230400); break;
- default: err("BELKIN USB Serial Adapter: unsupported baudrate request, using default of 9600");
- urb_value = BELKIN_SA_BAUD(9600); break;
- }
- if ((cflag & CBAUD) != B0 ) {
- if (BSA_USB_CMD(BELKIN_SA_SET_BAUDRATE_REQUEST, urb_value) < 0)
- err("Set baudrate error");
- } else {
- /* Disable flow control */
- if (BSA_USB_CMD(BELKIN_SA_SET_FLOW_CTRL_REQUEST, BELKIN_SA_FLOW_NONE) < 0)
- err("Disable flowcontrol error");
- /* Drop RTS and DTR */
- priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
- if (BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, 0) < 0)
- err("DTR LOW error");
- if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, 0) < 0)
- err("RTS LOW error");
- }
- }
- /* set the parity */
- if( (cflag&(PARENB|PARODD)) != (old_cflag&(PARENB|PARODD)) ) {
- if (cflag & PARENB)
- urb_value = (cflag & PARODD) ? BELKIN_SA_PARITY_ODD : BELKIN_SA_PARITY_EVEN;
- else
- urb_value = BELKIN_SA_PARITY_NONE;
- if (BSA_USB_CMD(BELKIN_SA_SET_PARITY_REQUEST, urb_value) < 0)
- err("Set parity error");
- }
- /* set the number of data bits */
- if( (cflag&CSIZE) != (old_cflag&CSIZE) ) {
- switch (cflag & CSIZE) {
- case CS5: urb_value = BELKIN_SA_DATA_BITS(5); break;
- case CS6: urb_value = BELKIN_SA_DATA_BITS(6); break;
- case CS7: urb_value = BELKIN_SA_DATA_BITS(7); break;
- case CS8: urb_value = BELKIN_SA_DATA_BITS(8); break;
- default: err("CSIZE was not CS5-CS8, using default of 8");
- urb_value = BELKIN_SA_DATA_BITS(8);
- break;
- }
- if (BSA_USB_CMD(BELKIN_SA_SET_DATA_BITS_REQUEST, urb_value) < 0)
- err("Set data bits error");
- }
- /* set the number of stop bits */
- if( (cflag&CSTOPB) != (old_cflag&CSTOPB) ) {
- urb_value = (cflag & CSTOPB) ? BELKIN_SA_STOP_BITS(2) : BELKIN_SA_STOP_BITS(1);
- if (BSA_USB_CMD(BELKIN_SA_SET_STOP_BITS_REQUEST, urb_value) < 0)
- err("Set stop bits error");
- }
- /* Set flow control */
- if( (iflag&IXOFF) != (old_iflag&IXOFF)
- || (iflag&IXON) != (old_iflag&IXON)
- || (cflag&CRTSCTS) != (old_cflag&CRTSCTS) ) {
- urb_value = 0;
- if ((iflag & IXOFF) || (iflag & IXON))
- urb_value |= (BELKIN_SA_FLOW_OXON | BELKIN_SA_FLOW_IXON);
- else
- urb_value &= ~(BELKIN_SA_FLOW_OXON | BELKIN_SA_FLOW_IXON);
- if (cflag & CRTSCTS)
- urb_value |= (BELKIN_SA_FLOW_OCTS | BELKIN_SA_FLOW_IRTS);
- else
- urb_value &= ~(BELKIN_SA_FLOW_OCTS | BELKIN_SA_FLOW_IRTS);
- if (priv->bad_flow_control)
- urb_value &= ~(BELKIN_SA_FLOW_IRTS);
- if (BSA_USB_CMD(BELKIN_SA_SET_FLOW_CTRL_REQUEST, urb_value) < 0)
- err("Set flow control error");
- }
- } /* belkin_sa_set_termios */
- static void belkin_sa_break_ctl( struct usb_serial_port *port, int break_state )
- {
- struct usb_serial *serial = port->serial;
- if (BSA_USB_CMD(BELKIN_SA_SET_BREAK_REQUEST, break_state ? 1 : 0) < 0)
- err("Set break_ctl %d", break_state);
- }
- static int belkin_sa_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
- {
- struct usb_serial *serial = port->serial;
- __u16 urb_value; /* Will hold the new flags */
- struct belkin_sa_private *priv = (struct belkin_sa_private *)port->private;
- int ret, mask;
-
- /* Based on code from acm.c and others */
- switch (cmd) {
- case TIOCMGET:
- return put_user(priv->control_state, (unsigned long *) arg);
- break;
- case TIOCMSET: /* Turns on and off the lines as specified by the mask */
- case TIOCMBIS: /* turns on (Sets) the lines as specified by the mask */
- case TIOCMBIC: /* turns off (Clears) the lines as specified by the mask */
- if (get_user(mask, (unsigned long *) arg))
- return -EFAULT;
- if ((cmd == TIOCMSET) || (mask & TIOCM_RTS)) {
- /* RTS needs set */
- urb_value = ((cmd == TIOCMSET) && (mask & TIOCM_RTS)) || (cmd == TIOCMBIS) ? 1 : 0;
- if (urb_value)
- priv->control_state |= TIOCM_RTS;
- else
- priv->control_state &= ~TIOCM_RTS;
- if ((ret = BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, urb_value)) < 0) {
- err("Set RTS error %d", ret);
- return(ret);
- }
- }
- if ((cmd == TIOCMSET) || (mask & TIOCM_DTR)) {
- /* DTR needs set */
- urb_value = ((cmd == TIOCMSET) && (mask & TIOCM_DTR)) || (cmd == TIOCMBIS) ? 1 : 0;
- if (urb_value)
- priv->control_state |= TIOCM_DTR;
- else
- priv->control_state &= ~TIOCM_DTR;
- if ((ret = BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, urb_value)) < 0) {
- err("Set DTR error %d", ret);
- return(ret);
- }
- }
- break;
-
- case TIOCMIWAIT:
- /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
- /* TODO */
- return( 0 );
- case TIOCGICOUNT:
- /* return count of modemline transitions */
- /* TODO */
- return 0;
- default:
- dbg("belkin_sa_ioctl arg not supported - 0x%04x",cmd);
- return(-ENOIOCTLCMD);
- break;
- }
- return 0;
- } /* belkin_sa_ioctl */
- static int __init belkin_sa_init (void)
- {
- usb_serial_register (&belkin_dockstation_device);
- usb_serial_register (&belkin_sa_device);
- usb_serial_register (&belkin_old_device);
- usb_serial_register (&peracom_device);
- usb_serial_register (&gocom232_device);
- info(DRIVER_DESC " " DRIVER_VERSION);
- return 0;
- }
- static void __exit belkin_sa_exit (void)
- {
- usb_serial_deregister (&belkin_dockstation_device);
- usb_serial_deregister (&belkin_sa_device);
- usb_serial_deregister (&belkin_old_device);
- usb_serial_deregister (&peracom_device);
- usb_serial_deregister (&gocom232_device);
- }
- module_init (belkin_sa_init);
- module_exit (belkin_sa_exit);
- MODULE_AUTHOR( DRIVER_AUTHOR );
- MODULE_DESCRIPTION( DRIVER_DESC );
- MODULE_LICENSE("GPL");
- MODULE_PARM(debug, "i");
- MODULE_PARM_DESC(debug, "Debug enabled or not");