mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-06 02:24:14 +08:00
f26788da3b
Export usb_serial_generic_close so that drivers can easily kill the read and write urb and make sure that the write fifo is reset. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
602 lines
17 KiB
C
602 lines
17 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 <linux/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_release(struct usb_serial *serial);
|
|
static int belkin_sa_open(struct tty_struct *tty,
|
|
struct usb_serial_port *port);
|
|
static void belkin_sa_close(struct usb_serial_port *port);
|
|
static void belkin_sa_read_int_callback(struct urb *urb);
|
|
static void belkin_sa_set_termios(struct tty_struct *tty,
|
|
struct usb_serial_port *port, struct ktermios * old);
|
|
static void belkin_sa_break_ctl(struct tty_struct *tty, int break_state);
|
|
static int belkin_sa_tiocmget(struct tty_struct *tty, struct file *file);
|
|
static int belkin_sa_tiocmset(struct tty_struct *tty, struct file *file,
|
|
unsigned int set, unsigned int clear);
|
|
|
|
|
|
static const 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_ports = 1,
|
|
.open = belkin_sa_open,
|
|
.close = belkin_sa_close,
|
|
.read_int_callback = belkin_sa_read_int_callback,
|
|
/* How we get the status info */
|
|
.set_termios = belkin_sa_set_termios,
|
|
.break_ctl = belkin_sa_break_ctl,
|
|
.tiocmget = belkin_sa_tiocmget,
|
|
.tiocmset = belkin_sa_tiocmset,
|
|
.attach = belkin_sa_startup,
|
|
.release = belkin_sa_release,
|
|
};
|
|
|
|
|
|
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;
|
|
dev_info(&dev->dev, "bcdDevice: %04x, bfc: %d\n",
|
|
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_release(struct usb_serial *serial)
|
|
{
|
|
struct belkin_sa_private *priv;
|
|
int i;
|
|
|
|
dbg("%s", __func__);
|
|
|
|
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 tty_struct *tty,
|
|
struct usb_serial_port *port)
|
|
{
|
|
int retval = 0;
|
|
|
|
dbg("%s port %d", __func__, 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) {
|
|
dev_err(&port->dev, "usb_submit_urb(read bulk) failed\n");
|
|
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);
|
|
dev_err(&port->dev, "usb_submit_urb(read int) failed\n");
|
|
}
|
|
|
|
exit:
|
|
return retval;
|
|
} /* belkin_sa_open */
|
|
|
|
|
|
static void belkin_sa_close(struct usb_serial_port *port)
|
|
{
|
|
dbg("%s port %d", __func__, port->number);
|
|
|
|
usb_serial_generic_close(port);
|
|
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 = urb->context;
|
|
struct belkin_sa_private *priv;
|
|
unsigned char *data = urb->transfer_buffer;
|
|
int retval;
|
|
int status = urb->status;
|
|
unsigned long flags;
|
|
|
|
switch (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",
|
|
__func__, status);
|
|
return;
|
|
default:
|
|
dbg("%s - nonzero urb status received: %d",
|
|
__func__, status);
|
|
goto exit;
|
|
}
|
|
|
|
usb_serial_debug_data(debug, &port->dev, __func__,
|
|
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 = tty_port_tty_get(&port->port);
|
|
/* 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) {
|
|
}
|
|
tty_kref_put(tty);
|
|
}
|
|
#endif
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
exit:
|
|
retval = usb_submit_urb(urb, GFP_ATOMIC);
|
|
if (retval)
|
|
dev_err(&port->dev, "%s - usb_submit_urb failed with "
|
|
"result %d\n", __func__, retval);
|
|
}
|
|
|
|
static void belkin_sa_set_termios(struct tty_struct *tty,
|
|
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;
|
|
speed_t baud;
|
|
struct ktermios *termios = tty->termios;
|
|
|
|
iflag = termios->c_iflag;
|
|
cflag = termios->c_cflag;
|
|
|
|
termios->c_cflag &= ~CMSPAR;
|
|
|
|
/* 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);
|
|
|
|
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)
|
|
dev_err(&port->dev, "Set DTR error\n");
|
|
/* don't set RTS if using hardware flow control */
|
|
if (!(old_cflag & CRTSCTS))
|
|
if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST
|
|
, 1) < 0)
|
|
dev_err(&port->dev, "Set RTS error\n");
|
|
}
|
|
}
|
|
|
|
baud = tty_get_baud_rate(tty);
|
|
if (baud) {
|
|
urb_value = BELKIN_SA_BAUD(baud);
|
|
/* Clip to maximum speed */
|
|
if (urb_value == 0)
|
|
urb_value = 1;
|
|
/* Turn it back into a resulting real baud rate */
|
|
baud = BELKIN_SA_BAUD(urb_value);
|
|
|
|
/* Report the actual baud rate back to the caller */
|
|
tty_encode_baud_rate(tty, baud, baud);
|
|
if (BSA_USB_CMD(BELKIN_SA_SET_BAUDRATE_REQUEST, urb_value) < 0)
|
|
dev_err(&port->dev, "Set baudrate error\n");
|
|
} else {
|
|
/* Disable flow control */
|
|
if (BSA_USB_CMD(BELKIN_SA_SET_FLOW_CTRL_REQUEST,
|
|
BELKIN_SA_FLOW_NONE) < 0)
|
|
dev_err(&port->dev, "Disable flowcontrol error\n");
|
|
/* Drop RTS and DTR */
|
|
control_state &= ~(TIOCM_DTR | TIOCM_RTS);
|
|
if (BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, 0) < 0)
|
|
dev_err(&port->dev, "DTR LOW error\n");
|
|
if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, 0) < 0)
|
|
dev_err(&port->dev, "RTS LOW error\n");
|
|
}
|
|
|
|
/* set the parity */
|
|
if ((cflag ^ 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)
|
|
dev_err(&port->dev, "Set parity error\n");
|
|
}
|
|
|
|
/* 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: dbg("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)
|
|
dev_err(&port->dev, "Set data bits error\n");
|
|
}
|
|
|
|
/* 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)
|
|
dev_err(&port->dev, "Set stop bits error\n");
|
|
}
|
|
|
|
/* Set flow control */
|
|
if (((iflag ^ old_iflag) & (IXOFF | IXON)) ||
|
|
((cflag ^ 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)
|
|
dev_err(&port->dev, "Set flow control error\n");
|
|
}
|
|
|
|
/* 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 tty_struct *tty, int break_state)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct usb_serial *serial = port->serial;
|
|
|
|
if (BSA_USB_CMD(BELKIN_SA_SET_BREAK_REQUEST, break_state ? 1 : 0) < 0)
|
|
dev_err(&port->dev, "Set break_ctl %d\n", break_state);
|
|
}
|
|
|
|
|
|
static int belkin_sa_tiocmget(struct tty_struct *tty, struct file *file)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct belkin_sa_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long control_state;
|
|
unsigned long flags;
|
|
|
|
dbg("%s", __func__);
|
|
|
|
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 tty_struct *tty, struct file *file,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
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", __func__);
|
|
|
|
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) {
|
|
dev_err(&port->dev, "Set RTS error %d\n", retval);
|
|
goto exit;
|
|
}
|
|
|
|
retval = BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, dtr);
|
|
if (retval < 0) {
|
|
dev_err(&port->dev, "Set DTR error %d\n", retval);
|
|
goto exit;
|
|
}
|
|
exit:
|
|
return retval;
|
|
}
|
|
|
|
|
|
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;
|
|
printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
|
|
DRIVER_DESC "\n");
|
|
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");
|