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/* -*- Mode: C; indent-tabs-mode:t ; c-basic-offset:8 -*- */
/*
* Hotplug support for libusb
* Copyright © 2012-2013 Nathan Hjelm <hjelmn@mac.com>
* Copyright © 2012-2013 Peter Stuge <peter@stuge.se>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef USBI_HOTPLUG_H
#define USBI_HOTPLUG_H
#include "libusbi.h"
enum usbi_hotplug_flags {
/* This callback is interested in device arrivals */
USBI_HOTPLUG_DEVICE_ARRIVED = LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED,
/* This callback is interested in device removals */
USBI_HOTPLUG_DEVICE_LEFT = LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT,
/* IMPORTANT: The values for the below entries must start *after*
* the highest value of the above entries!!!
*/
/* The vendor_id field is valid for matching */
USBI_HOTPLUG_VENDOR_ID_VALID = (1U << 3),
/* The product_id field is valid for matching */
USBI_HOTPLUG_PRODUCT_ID_VALID = (1U << 4),
/* The dev_class field is valid for matching */
USBI_HOTPLUG_DEV_CLASS_VALID = (1U << 5),
/* This callback has been unregistered and needs to be freed */
USBI_HOTPLUG_NEEDS_FREE = (1U << 6),
};
/** \ingroup hotplug
* The hotplug callback structure. The user populates this structure with
* libusb_hotplug_prepare_callback() and then calls libusb_hotplug_register_callback()
* to receive notification of hotplug events.
*/
struct libusb_hotplug_callback {
/** Flags that control how this callback behaves */
uint8_t flags;
/** Vendor ID to match (if flags says this is valid) */
uint16_t vendor_id;
/** Product ID to match (if flags says this is valid) */
uint16_t product_id;
/** Device class to match (if flags says this is valid) */
uint8_t dev_class;
/** Callback function to invoke for matching event/device */
libusb_hotplug_callback_fn cb;
/** Handle for this callback (used to match on deregister) */
libusb_hotplug_callback_handle handle;
/** User data that will be passed to the callback function */
void *user_data;
/** List this callback is registered in (ctx->hotplug_cbs) */
struct list_head list;
};
struct libusb_hotplug_message {
/** The hotplug event that occurred */
libusb_hotplug_event event;
/** The device for which this hotplug event occurred */
struct libusb_device *device;
/** List this message is contained in (ctx->hotplug_msgs) */
struct list_head list;
};
void usbi_hotplug_deregister(struct libusb_context *ctx, int forced);
void usbi_hotplug_match(struct libusb_context *ctx, struct libusb_device *dev,
libusb_hotplug_event event);
void usbi_hotplug_notification(struct libusb_context *ctx, struct libusb_device *dev,
libusb_hotplug_event event);
#endif
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