1,142 → 1,145 |
/* |
* USB Serial Converter Bus specific functions |
* |
* Copyright (C) 2002 Greg Kroah-Hartman (greg@kroah.com) |
* |
* 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. |
*/ |
|
#include <linuxcomp.h> |
|
#include <linux/config.h> |
#include <linux/kernel.h> |
#include <linux/errno.h> |
#include <linux/tty.h> |
#include <linux/module.h> |
#include <linux/usb.h> |
|
#ifdef CONFIG_USB_SERIAL_DEBUG |
static int debug = 1; |
#else |
static int debug; |
#endif |
|
#include "usb-serial.h" |
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static int usb_serial_device_match (struct device *dev, struct device_driver *drv) |
{ |
struct usb_serial_device_type *driver; |
const struct usb_serial_port *port; |
|
/* |
* drivers are already assigned to ports in serial_probe so it's |
* a simple check here. |
*/ |
port = to_usb_serial_port(dev); |
if (!port) |
return 0; |
|
driver = to_usb_serial_driver(drv); |
|
if (driver == port->serial->type) |
return 1; |
|
return 0; |
} |
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struct bus_type usb_serial_bus_type = { |
.name = "usb-serial", |
.match = usb_serial_device_match, |
}; |
|
static int usb_serial_device_probe (struct device *dev) |
{ |
struct usb_serial_device_type *driver; |
struct usb_serial_port *port; |
int retval = 0; |
int minor; |
|
port = to_usb_serial_port(dev); |
if (!port) { |
retval = -ENODEV; |
goto exit; |
} |
|
driver = port->serial->type; |
if (driver->port_probe) { |
if (!try_module_get(driver->owner)) { |
dev_err(dev, "module get failed, exiting\n"); |
retval = -EIO; |
goto exit; |
} |
retval = driver->port_probe (port); |
module_put(driver->owner); |
if (retval) |
goto exit; |
} |
|
minor = port->number; |
tty_register_device (usb_serial_tty_driver, minor, dev); |
dev_info(&port->serial->dev->dev, |
"%s converter now attached to ttyUSB%d (or usb/tts/%d for devfs)\n", |
driver->name, minor, minor); |
|
exit: |
return retval; |
} |
|
static int usb_serial_device_remove (struct device *dev) |
{ |
struct usb_serial_device_type *driver; |
struct usb_serial_port *port; |
int retval = 0; |
int minor; |
|
port = to_usb_serial_port(dev); |
if (!port) { |
return -ENODEV; |
} |
|
driver = port->serial->type; |
if (driver->port_remove) { |
if (!try_module_get(driver->owner)) { |
dev_err(dev, "module get failed, exiting\n"); |
retval = -EIO; |
goto exit; |
} |
retval = driver->port_remove (port); |
module_put(driver->owner); |
} |
exit: |
minor = port->number; |
tty_unregister_device (usb_serial_tty_driver, minor); |
dev_info(dev, "%s converter now disconnected from ttyUSB%d\n", |
driver->name, minor); |
|
return retval; |
} |
|
int usb_serial_bus_register(struct usb_serial_device_type *device) |
{ |
int retval; |
|
if (device->short_name) |
device->driver.name = (char *)device->short_name; |
else |
device->driver.name = (char *)device->name; |
device->driver.bus = &usb_serial_bus_type; |
device->driver.probe = usb_serial_device_probe; |
device->driver.remove = usb_serial_device_remove; |
|
retval = driver_register(&device->driver); |
|
return retval; |
} |
|
void usb_serial_bus_deregister(struct usb_serial_device_type *device) |
{ |
driver_unregister (&device->driver); |
} |
|
/* |
* USB Serial Converter Bus specific functions |
* |
* Copyright (C) 2002 Greg Kroah-Hartman (greg@kroah.com) |
* |
* 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. |
*/ |
|
#include <linuxcomp.h> |
|
#include <linux/config.h> |
#include <linux/kernel.h> |
#include <linux/errno.h> |
#include <linux/tty.h> |
#include <linux/module.h> |
#include <linux/usb.h> |
|
#ifdef CONFIG_USB_SERIAL_DEBUG |
static int debug = 1; |
#else |
static int debug; |
#endif |
|
#include "usb-serial.h" |
|
static int usb_serial_device_match (struct device *dev, struct device_driver *drv) |
{ |
struct usb_serial_device_type *driver; |
const struct usb_serial_port *port; |
|
/* |
* drivers are already assigned to ports in serial_probe so it's |
* a simple check here. |
*/ |
port = to_usb_serial_port(dev); |
if (!port) |
return 0; |
|
driver = to_usb_serial_driver(drv); |
|
if (driver == port->serial->type) |
return 1; |
|
return 0; |
} |
|
struct bus_type usb_serial_bus_type = { |
.name = "usb-serial", |
.match = usb_serial_device_match, |
}; |
|
static int usb_serial_device_probe (struct device *dev) |
{ |
struct usb_serial_device_type *driver; |
struct usb_serial_port *port; |
int retval = 0; |
int minor; |
int i; |
|
port = to_usb_serial_port(dev); |
if (!port) { |
retval = -ENODEV; |
goto exit; |
} |
|
driver = port->serial->type; |
if (driver->port_probe) { |
if (!try_module_get(driver->owner)) { |
dev_err(dev, "module get failed, exiting\n"); |
retval = -EIO; |
goto exit; |
} |
retval = driver->port_probe (port); |
module_put(driver->owner); |
if (retval) |
goto exit; |
} |
|
minor = port->number; |
tty_register_device (usb_serial_tty_driver, minor, dev); |
dev_info(&port->serial->dev->dev, |
"%s converter now attached to ttyUSB%d (or usb/tts/%d for devfs)\n", |
driver->name, minor, minor); |
/* for (i=0; i<20; i++) |
printk("ttyusb%d\n", minor);*/ |
|
exit: |
return retval; |
} |
|
static int usb_serial_device_remove (struct device *dev) |
{ |
struct usb_serial_device_type *driver; |
struct usb_serial_port *port; |
int retval = 0; |
int minor; |
|
port = to_usb_serial_port(dev); |
if (!port) { |
return -ENODEV; |
} |
|
driver = port->serial->type; |
if (driver->port_remove) { |
if (!try_module_get(driver->owner)) { |
dev_err(dev, "module get failed, exiting\n"); |
retval = -EIO; |
goto exit; |
} |
retval = driver->port_remove (port); |
module_put(driver->owner); |
} |
exit: |
minor = port->number; |
tty_unregister_device (usb_serial_tty_driver, minor); |
dev_info(dev, "%s converter now disconnected from ttyUSB%d\n", |
driver->name, minor); |
|
return retval; |
} |
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int usb_serial_bus_register(struct usb_serial_device_type *device) |
{ |
int retval; |
|
if (device->short_name) |
device->driver.name = (char *)device->short_name; |
else |
device->driver.name = (char *)device->name; |
device->driver.bus = &usb_serial_bus_type; |
device->driver.probe = usb_serial_device_probe; |
device->driver.remove = usb_serial_device_remove; |
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retval = driver_register(&device->driver); |
|
return retval; |
} |
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void usb_serial_bus_deregister(struct usb_serial_device_type *device) |
{ |
driver_unregister (&device->driver); |
} |
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