hw_rtc_hy7201.c

来自「QNX ADS BSP code for i.MX27 chips」· C语言 代码 · 共 42 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"
#include <arm/hy7201.h>

unsigned long
rtc_time_hy7201()
{
	hwi_add_device(HWI_ITEM_BUS_UNKNOWN, HWI_ITEM_DEVCLASS_RTC, "hy7201", 0);

	/*
	 * FIXME: do we need to clear the match interrupt enables?
	 *        do we need to set the clock divider?
	 */

	/*
	 * Read counter register.
	 */
	return in32(HY7201_RTC_BASE + HY7201_RTC_RTCDR);
}