| /* |
| * comedi_usb.c |
| * Comedi USB driver specific functions. |
| * |
| * COMEDI - Linux Control and Measurement Device Interface |
| * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org> |
| * |
| * 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. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/usb.h> |
| |
| #include "comedidev.h" |
| |
| /** |
| * comedi_to_usb_interface() - comedi_device pointer to usb_interface pointer. |
| * @dev: comedi_device struct |
| */ |
| struct usb_interface *comedi_to_usb_interface(struct comedi_device *dev) |
| { |
| return dev->hw_dev ? to_usb_interface(dev->hw_dev) : NULL; |
| } |
| EXPORT_SYMBOL_GPL(comedi_to_usb_interface); |
| |
| /** |
| * comedi_usb_auto_config() - Configure/probe a comedi USB driver. |
| * @intf: usb_interface struct |
| * @driver: comedi_driver struct |
| * @context: driver specific data, passed to comedi_auto_config() |
| * |
| * Typically called from the usb_driver (*probe) function. |
| */ |
| int comedi_usb_auto_config(struct usb_interface *intf, |
| struct comedi_driver *driver, |
| unsigned long context) |
| { |
| return comedi_auto_config(&intf->dev, driver, context); |
| } |
| EXPORT_SYMBOL_GPL(comedi_usb_auto_config); |
| |
| /** |
| * comedi_pci_auto_unconfig() - Unconfigure/disconnect a comedi USB driver. |
| * @intf: usb_interface struct |
| * |
| * Typically called from the usb_driver (*disconnect) function. |
| */ |
| void comedi_usb_auto_unconfig(struct usb_interface *intf) |
| { |
| comedi_auto_unconfig(&intf->dev); |
| } |
| EXPORT_SYMBOL_GPL(comedi_usb_auto_unconfig); |
| |
| /** |
| * comedi_usb_driver_register() - Register a comedi USB driver. |
| * @comedi_driver: comedi_driver struct |
| * @usb_driver: usb_driver struct |
| * |
| * This function is used for the module_init() of comedi USB drivers. |
| * Do not call it directly, use the module_comedi_usb_driver() helper |
| * macro instead. |
| */ |
| int comedi_usb_driver_register(struct comedi_driver *comedi_driver, |
| struct usb_driver *usb_driver) |
| { |
| int ret; |
| |
| ret = comedi_driver_register(comedi_driver); |
| if (ret < 0) |
| return ret; |
| |
| ret = usb_register(usb_driver); |
| if (ret < 0) { |
| comedi_driver_unregister(comedi_driver); |
| return ret; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(comedi_usb_driver_register); |
| |
| /** |
| * comedi_usb_driver_unregister() - Unregister a comedi USB driver. |
| * @comedi_driver: comedi_driver struct |
| * @usb_driver: usb_driver struct |
| * |
| * This function is used for the module_exit() of comedi USB drivers. |
| * Do not call it directly, use the module_comedi_usb_driver() helper |
| * macro instead. |
| */ |
| void comedi_usb_driver_unregister(struct comedi_driver *comedi_driver, |
| struct usb_driver *usb_driver) |
| { |
| usb_deregister(usb_driver); |
| comedi_driver_unregister(comedi_driver); |
| } |
| EXPORT_SYMBOL_GPL(comedi_usb_driver_unregister); |