616 строки
18 KiB
C
616 строки
18 KiB
C
/*
|
|
* Belkin USB Serial Adapter Driver
|
|
*
|
|
* Copyright (C) 2000 William Greathouse (wgreathouse@smva.com)
|
|
* Copyright (C) 2000-2001 Greg Kroah-Hartman (greg@kroah.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 :)
|
|
*
|
|
* 27-Nov-2001 gkh
|
|
* compressed all the differnent device entries into 1.
|
|
*
|
|
* 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/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/tty_driver.h>
|
|
#include <linux/tty_flip.h>
|
|
#include <linux/module.h>
|
|
#include <linux/spinlock.h>
|
|
#include <asm/uaccess.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/serial.h>
|
|
#include "belkin_sa.h"
|
|
|
|
static int debug;
|
|
|
|
/*
|
|
* Version Information
|
|
*/
|
|
#define DRIVER_VERSION "v1.2"
|
|
#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 ktermios * 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 int belkin_sa_tiocmget (struct usb_serial_port *port, struct file *file);
|
|
static int belkin_sa_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear);
|
|
|
|
|
|
static 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(GOHUBS_VID, HANDYLINK_PID) },
|
|
{ USB_DEVICE(BELKIN_DOCKSTATION_VID, BELKIN_DOCKSTATION_PID) },
|
|
{ } /* Terminating entry */
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE (usb, id_table_combined);
|
|
|
|
static struct usb_driver belkin_driver = {
|
|
.name = "belkin",
|
|
.probe = usb_serial_probe,
|
|
.disconnect = usb_serial_disconnect,
|
|
.id_table = id_table_combined,
|
|
.no_dynamic_id = 1,
|
|
};
|
|
|
|
/* All of the device info needed for the serial converters */
|
|
static struct usb_serial_driver belkin_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "belkin",
|
|
},
|
|
.description = "Belkin / Peracom / GoHubs USB Serial Adapter",
|
|
.usb_driver = &belkin_driver,
|
|
.id_table = id_table_combined,
|
|
.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,
|
|
.tiocmget = belkin_sa_tiocmget,
|
|
.tiocmset = belkin_sa_tiocmset,
|
|
.attach = belkin_sa_startup,
|
|
.shutdown = belkin_sa_shutdown,
|
|
};
|
|
|
|
|
|
struct belkin_sa_private {
|
|
spinlock_t lock;
|
|
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 5000 /* 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 */
|
|
priv = kmalloc(sizeof(struct belkin_sa_private), GFP_KERNEL);
|
|
if (!priv)
|
|
return (-1); /* error */
|
|
/* set initial values for control structures */
|
|
spin_lock_init(&priv->lock);
|
|
priv->control_state = 0;
|
|
priv->last_lsr = 0;
|
|
priv->last_msr = 0;
|
|
/* see comments at top of file */
|
|
priv->bad_flow_control = (le16_to_cpu(dev->descriptor.bcdDevice) <= 0x0206) ? 1 : 0;
|
|
info("bcdDevice: %04x, bfc: %d", le16_to_cpu(dev->descriptor.bcdDevice), priv->bad_flow_control);
|
|
|
|
init_waitqueue_head(&serial->port[0]->write_wait);
|
|
usb_set_serial_port_data(serial->port[0], priv);
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
static void belkin_sa_shutdown (struct usb_serial *serial)
|
|
{
|
|
struct belkin_sa_private *priv;
|
|
int i;
|
|
|
|
dbg ("%s", __FUNCTION__);
|
|
|
|
/* stop reads and writes on all ports */
|
|
for (i=0; i < serial->num_ports; ++i) {
|
|
/* My special items, the standard routines free my urbs */
|
|
priv = usb_get_serial_port_data(serial->port[i]);
|
|
kfree(priv);
|
|
}
|
|
}
|
|
|
|
|
|
static int belkin_sa_open (struct usb_serial_port *port, struct file *filp)
|
|
{
|
|
int retval = 0;
|
|
|
|
dbg("%s port %d", __FUNCTION__, port->number);
|
|
|
|
/*Start reading from the device*/
|
|
/* TODO: Look at possibility of submitting multiple 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, GFP_KERNEL);
|
|
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, GFP_KERNEL);
|
|
if (retval) {
|
|
usb_kill_urb(port->read_urb);
|
|
err(" usb_submit_urb(read int) failed");
|
|
}
|
|
|
|
exit:
|
|
return retval;
|
|
} /* belkin_sa_open */
|
|
|
|
|
|
static void belkin_sa_close (struct usb_serial_port *port, struct file *filp)
|
|
{
|
|
dbg("%s port %d", __FUNCTION__, port->number);
|
|
|
|
/* shutdown our bulk reads and writes */
|
|
usb_kill_urb(port->write_urb);
|
|
usb_kill_urb(port->read_urb);
|
|
usb_kill_urb(port->interrupt_in_urb);
|
|
} /* 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;
|
|
unsigned char *data = urb->transfer_buffer;
|
|
int retval;
|
|
unsigned long flags;
|
|
|
|
switch (urb->status) {
|
|
case 0:
|
|
/* success */
|
|
break;
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
/* this urb is terminated, clean up */
|
|
dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
|
|
return;
|
|
default:
|
|
dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
|
|
goto exit;
|
|
}
|
|
|
|
usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
|
|
|
|
/* Handle known interrupt data */
|
|
/* ignore data[0] and data[1] */
|
|
|
|
priv = usb_get_serial_port_data(port);
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
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
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
exit:
|
|
retval = usb_submit_urb (urb, GFP_ATOMIC);
|
|
if (retval)
|
|
err ("%s - usb_submit_urb failed with result %d",
|
|
__FUNCTION__, retval);
|
|
}
|
|
|
|
static void belkin_sa_set_termios (struct usb_serial_port *port, struct ktermios *old_termios)
|
|
{
|
|
struct usb_serial *serial = port->serial;
|
|
struct belkin_sa_private *priv = usb_get_serial_port_data(port);
|
|
unsigned int iflag;
|
|
unsigned int cflag;
|
|
unsigned int old_iflag = 0;
|
|
unsigned int old_cflag = 0;
|
|
__u16 urb_value = 0; /* Will hold the new flags */
|
|
unsigned long flags;
|
|
unsigned long control_state;
|
|
int bad_flow_control;
|
|
|
|
if ((!port->tty) || (!port->tty->termios)) {
|
|
dbg ("%s - no tty or termios structure", __FUNCTION__);
|
|
return;
|
|
}
|
|
|
|
iflag = port->tty->termios->c_iflag;
|
|
cflag = port->tty->termios->c_cflag;
|
|
|
|
/* get a local copy of the current port settings */
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
control_state = priv->control_state;
|
|
bad_flow_control = priv->bad_flow_control;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
/* check that they really want us to change something */
|
|
if (old_termios) {
|
|
if ((cflag == old_termios->c_cflag) &&
|
|
(RELEVANT_IFLAG(port->tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
|
|
dbg("%s - nothing to change...", __FUNCTION__);
|
|
return;
|
|
}
|
|
old_iflag = old_termios->c_iflag;
|
|
old_cflag = old_termios->c_cflag;
|
|
}
|
|
|
|
/* Set the baud rate */
|
|
if( (cflag&CBAUD) != (old_cflag&CBAUD) ) {
|
|
/* reassert DTR and (maybe) RTS on transition from B0 */
|
|
if( (old_cflag&CBAUD) == B0 ) {
|
|
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 */
|
|
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 (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");
|
|
}
|
|
|
|
/* save off the modified port settings */
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->control_state = control_state;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
} /* 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_tiocmget (struct usb_serial_port *port, struct file *file)
|
|
{
|
|
struct belkin_sa_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long control_state;
|
|
unsigned long flags;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
control_state = priv->control_state;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return control_state;
|
|
}
|
|
|
|
|
|
static int belkin_sa_tiocmset (struct usb_serial_port *port, struct file *file,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
struct usb_serial *serial = port->serial;
|
|
struct belkin_sa_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long control_state;
|
|
unsigned long flags;
|
|
int retval;
|
|
int rts = 0;
|
|
int dtr = 0;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
control_state = priv->control_state;
|
|
|
|
if (set & TIOCM_RTS) {
|
|
control_state |= TIOCM_RTS;
|
|
rts = 1;
|
|
}
|
|
if (set & TIOCM_DTR) {
|
|
control_state |= TIOCM_DTR;
|
|
dtr = 1;
|
|
}
|
|
if (clear & TIOCM_RTS) {
|
|
control_state &= ~TIOCM_RTS;
|
|
rts = 0;
|
|
}
|
|
if (clear & TIOCM_DTR) {
|
|
control_state &= ~TIOCM_DTR;
|
|
dtr = 0;
|
|
}
|
|
|
|
priv->control_state = control_state;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
retval = BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, rts);
|
|
if (retval < 0) {
|
|
err("Set RTS error %d", retval);
|
|
goto exit;
|
|
}
|
|
|
|
retval = BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, dtr);
|
|
if (retval < 0) {
|
|
err("Set DTR error %d", retval);
|
|
goto exit;
|
|
}
|
|
exit:
|
|
return retval;
|
|
}
|
|
|
|
|
|
static int belkin_sa_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
|
|
{
|
|
switch (cmd) {
|
|
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)
|
|
{
|
|
int retval;
|
|
retval = usb_serial_register(&belkin_device);
|
|
if (retval)
|
|
goto failed_usb_serial_register;
|
|
retval = usb_register(&belkin_driver);
|
|
if (retval)
|
|
goto failed_usb_register;
|
|
info(DRIVER_DESC " " DRIVER_VERSION);
|
|
return 0;
|
|
failed_usb_register:
|
|
usb_serial_deregister(&belkin_device);
|
|
failed_usb_serial_register:
|
|
return retval;
|
|
}
|
|
|
|
|
|
static void __exit belkin_sa_exit (void)
|
|
{
|
|
usb_deregister (&belkin_driver);
|
|
usb_serial_deregister (&belkin_device);
|
|
}
|
|
|
|
|
|
module_init (belkin_sa_init);
|
|
module_exit (belkin_sa_exit);
|
|
|
|
MODULE_AUTHOR( DRIVER_AUTHOR );
|
|
MODULE_DESCRIPTION( DRIVER_DESC );
|
|
MODULE_VERSION( DRIVER_VERSION );
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(debug, "Debug enabled or not");
|