hwi_add_device.c

来自「QNX ADS BSP code for i.MX27 chips」· C语言 代码 · 共 48 行

/*
 * $QNXLicenseC: 
 * Copyright 2007, QNX Software Systems.  
 *  
 * Licensed under the Apache License, Version 2.0 (the "License"). You  
 * may not reproduce, modify or distribute this software except in  
 * compliance with the License. You may obtain a copy of the License  
 * at: http://www.apache.org/licenses/LICENSE-2.0  
 *  
 * Unless required by applicable law or agreed to in writing, software  
 * distributed under the License is distributed on an "AS IS" basis,  
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied. 
 * 
 * This file may contain contributions from others, either as  
 * contributors under the License or as licensors under other terms.   
 * Please review this entire file for other proprietary rights or license  
 * notices, as well as the QNX Development Suite License Guide at  
 * http://licensing.qnx.com/license-guide/ for other information. 
 * $
 */


 
 #include "startup.h"

void 
hwi_add_device(const char *bname, const char *cname, const char *dname, unsigned pnp) {
	hwi_tag		*tag;
	unsigned	bus;
	unsigned	class;

	bus = hwi_find_item(HWI_NULL_OFF, bname, NULL);
	if(bus == HWI_NULL_OFF) {
		unsigned off = hwi_find_item(HWI_NULL_OFF, HWI_ITEM_ROOT_HW, NULL);

		tag = hwi_alloc_item(HWI_TAG_INFO(bus), bname, off);
		bus = hwi_tag2off(tag);
	}
	class = hwi_find_item(HWI_NULL_OFF, bname, cname, NULL);
	if(class == HWI_NULL_OFF) {
		tag = hwi_alloc_item(HWI_TAG_INFO(group), cname, bus);
		class = hwi_tag2off(tag);
	}
	tag = hwi_alloc_item(HWI_TAG_INFO(device), dname, class);
	tag->device.pnpid = pnp;
}