blob: 1873a33685bf7721eb89775d61e1a5a2668c53c4 [file] [log] [blame]
#ifndef __BACKPORT_USB_H
#define __BACKPORT_USB_H
#include_next <linux/usb.h>
#include <linux/version.h>
#ifndef module_usb_driver
/**
* module_usb_driver() - Helper macro for registering a USB driver
* @__usb_driver: usb_driver struct
*
* Helper macro for USB drivers which do not do anything special in module
* init/exit. This eliminates a lot of boilerplate. Each module may only
* use this macro once, and calling it replaces module_init() and module_exit()
*/
#define module_usb_driver(__usb_driver) \
module_driver(__usb_driver, usb_register, \
usb_deregister)
#endif
#ifndef USB_VENDOR_AND_INTERFACE_INFO
/**
* Backports
*
* commit d81a5d1956731c453b85c141458d4ff5d6cc5366
* Author: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
* Date: Tue Jul 10 19:10:06 2012 -0300
*
* USB: add USB_VENDOR_AND_INTERFACE_INFO() macro
*/
#define USB_VENDOR_AND_INTERFACE_INFO(vend, cl, sc, pr) \
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO \
| USB_DEVICE_ID_MATCH_VENDOR, \
.idVendor = (vend), \
.bInterfaceClass = (cl), \
.bInterfaceSubClass = (sc), \
.bInterfaceProtocol = (pr)
#endif /* USB_VENDOR_AND_INTERFACE_INFO */
#ifndef USB_DEVICE_INTERFACE_NUMBER
/**
* USB_DEVICE_INTERFACE_NUMBER - describe a usb device with a specific interface number
* @vend: the 16 bit USB Vendor ID
* @prod: the 16 bit USB Product ID
* @num: bInterfaceNumber value
*
* This macro is used to create a struct usb_device_id that matches a
* specific interface number of devices.
*/
#define USB_DEVICE_INTERFACE_NUMBER(vend, prod, num) \
.match_flags = USB_DEVICE_ID_MATCH_DEVICE, \
.idVendor = (vend), \
.idProduct = (prod)
#endif /* USB_DEVICE_INTERFACE_NUMBER */
#ifndef USB_DEVICE_INTERFACE_CLASS
/**
* USB_DEVICE_INTERFACE_CLASS - describe a usb device with a specific interface class
* @vend: the 16 bit USB Vendor ID
* @prod: the 16 bit USB Product ID
* @cl: bInterfaceClass value
*
* This macro is used to create a struct usb_device_id that matches a
* specific interface class of devices.
*/
#define USB_DEVICE_INTERFACE_CLASS(vend, prod, cl) \
.match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
USB_DEVICE_ID_MATCH_INT_CLASS, \
.idVendor = (vend), \
.idProduct = (prod), \
.bInterfaceClass = (cl)
#endif /* USB_DEVICE_INTERFACE_CLASS */
#ifndef USB_SUBCLASS_VENDOR_SPEC
/* this is defined in usb/ch9.h, but we only need it through here */
#define USB_SUBCLASS_VENDOR_SPEC 0xff
#endif
#if LINUX_VERSION_IS_LESS(3,2,0)
#define usb_translate_errors LINUX_BACKPORT(usb_translate_errors)
static inline int usb_translate_errors(int error_code)
{
switch (error_code) {
case 0:
case -ENOMEM:
case -ENODEV:
case -EOPNOTSUPP:
return error_code;
default:
return -EIO;
}
}
#endif /* LINUX_VERSION_IS_LESS(3,2,0) */
#endif /* __BACKPORT_USB_H */