projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| abac8b54 HS |
1 | /* |
| 2 | * comedi_usb.c | |
| 3 | * Comedi USB driver specific functions. | |
| 4 | * | |
| 5 | * COMEDI - Linux Control and Measurement Device Interface | |
| 6 | * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org> | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License as published by | |
| 10 | * the Free Software Foundation; either version 2 of the License, or | |
| 11 | * (at your option) any later version. | |
| 12 | * | |
| 13 | * This program is distributed in the hope that it will be useful, | |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | * GNU General Public License for more details. | |
| abac8b54 HS |
17 | */ |
| 18 | ||
| 19 | #include <linux/usb.h> | |
| 20 | ||
| 21 | #include "comedidev.h" | |
| 22 | ||
| 23 | /** | |
| 24 | * comedi_to_usb_interface() - comedi_device pointer to usb_interface pointer. | |
| 25 | * @dev: comedi_device struct | |
| 26 | */ | |
| 27 | struct usb_interface *comedi_to_usb_interface(struct comedi_device *dev) | |
| 28 | { | |
| 29 | return dev->hw_dev ? to_usb_interface(dev->hw_dev) : NULL; | |
| 30 | } | |
| 31 | EXPORT_SYMBOL_GPL(comedi_to_usb_interface); | |
| 32 | ||
| 33 | /** | |
| 34 | * comedi_usb_auto_config() - Configure/probe a comedi USB driver. | |
| 35 | * @intf: usb_interface struct | |
| 36 | * @driver: comedi_driver struct | |
| 55ab4f64 | 37 | * @context: driver specific data, passed to comedi_auto_config() |
| abac8b54 HS |
38 | * |
| 39 | * Typically called from the usb_driver (*probe) function. | |
| 40 | */ | |
| 41 | int comedi_usb_auto_config(struct usb_interface *intf, | |
| 55ab4f64 HS |
42 | struct comedi_driver *driver, |
| 43 | unsigned long context) | |
| abac8b54 | 44 | { |
| 55ab4f64 | 45 | return comedi_auto_config(&intf->dev, driver, context); |
| abac8b54 HS |
46 | } |
| 47 | EXPORT_SYMBOL_GPL(comedi_usb_auto_config); | |
| 48 | ||
| 49 | /** | |
| 50 | * comedi_pci_auto_unconfig() - Unconfigure/disconnect a comedi USB driver. | |
| 51 | * @intf: usb_interface struct | |
| 52 | * | |
| 53 | * Typically called from the usb_driver (*disconnect) function. | |
| 54 | */ | |
| 55 | void comedi_usb_auto_unconfig(struct usb_interface *intf) | |
| 56 | { | |
| 57 | comedi_auto_unconfig(&intf->dev); | |
| 58 | } | |
| 59 | EXPORT_SYMBOL_GPL(comedi_usb_auto_unconfig); | |
| 60 | ||
| 61 | /** | |
| 62 | * comedi_usb_driver_register() - Register a comedi USB driver. | |
| 63 | * @comedi_driver: comedi_driver struct | |
| 64 | * @usb_driver: usb_driver struct | |
| 65 | * | |
| 66 | * This function is used for the module_init() of comedi USB drivers. | |
| 67 | * Do not call it directly, use the module_comedi_usb_driver() helper | |
| 68 | * macro instead. | |
| 69 | */ | |
| 70 | int comedi_usb_driver_register(struct comedi_driver *comedi_driver, | |
| 71 | struct usb_driver *usb_driver) | |
| 72 | { | |
| 73 | int ret; | |
| 74 | ||
| 75 | ret = comedi_driver_register(comedi_driver); | |
| 76 | if (ret < 0) | |
| 77 | return ret; | |
| 78 | ||
| 79 | ret = usb_register(usb_driver); | |
| 80 | if (ret < 0) { | |
| 81 | comedi_driver_unregister(comedi_driver); | |
| 82 | return ret; | |
| 83 | } | |
| 84 | ||
| 85 | return 0; | |
| 86 | } | |
| 87 | EXPORT_SYMBOL_GPL(comedi_usb_driver_register); | |
| 88 | ||
| 89 | /** | |
| 90 | * comedi_usb_driver_unregister() - Unregister a comedi USB driver. | |
| 91 | * @comedi_driver: comedi_driver struct | |
| 92 | * @usb_driver: usb_driver struct | |
| 93 | * | |
| 94 | * This function is used for the module_exit() of comedi USB drivers. | |
| 95 | * Do not call it directly, use the module_comedi_usb_driver() helper | |
| 96 | * macro instead. | |
| 97 | */ | |
| 98 | void comedi_usb_driver_unregister(struct comedi_driver *comedi_driver, | |
| 99 | struct usb_driver *usb_driver) | |
| 100 | { | |
| 101 | usb_deregister(usb_driver); | |
| 102 | comedi_driver_unregister(comedi_driver); | |
| 103 | } | |
| 104 | EXPORT_SYMBOL_GPL(comedi_usb_driver_unregister); |