[people/ms/u-boot.git] / drivers / rtc / mcfrtc.c

/*
 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>

#if defined(CONFIG_CMD_DATE)

#include <command.h>
#include <rtc.h>
#include <asm/immap.h>
#include <asm/rtc.h>

#undef RTC_DEBUG

#ifndef CONFIG_SYS_MCFRTC_BASE
#error RTC_BASE is not defined!
#endif

#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
#define	STARTOFTIME		1970

int rtc_get(struct rtc_time *tmp)
{
	volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE);

	int rtc_days, rtc_hrs, rtc_mins;
	int tim;

	rtc_days = rtc->days;
	rtc_hrs = rtc->hourmin >> 8;
	rtc_mins = RTC_HOURMIN_MINUTES(rtc->hourmin);

	tim = (rtc_days * 24) + rtc_hrs;
	tim = (tim * 60) + rtc_mins;
	tim = (tim * 60) + rtc->seconds;

	rtc_to_tm(tim, tmp);

	tmp->tm_yday = 0;
	tmp->tm_isdst = 0;

#ifdef RTC_DEBUG
	printf("Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
	       tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
	       tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
#endif

	return 0;
}

int rtc_set(struct rtc_time *tmp)
{
	volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE);

	static int month_days[12] = {
		31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
	};
	int days, i, months;

	if (tmp->tm_year > 2037) {
		printf("Unable to handle. Exceeding integer limitation!\n");
		tmp->tm_year = 2027;
	}
#ifdef RTC_DEBUG
	printf("Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
	       tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
	       tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
#endif

	/* calculate days by years */
	for (i = STARTOFTIME, days = 0; i < tmp->tm_year; i++) {
		days += 365 + isleap(i);
	}

	/* calculate days by months */
	months = tmp->tm_mon - 1;
	for (i = 0; i < months; i++) {
		days += month_days[i];

		if (i == 1)
			days += isleap(i);
	}

	days += tmp->tm_mday - 1;

	rtc->days = days;
	rtc->hourmin = (tmp->tm_hour << 8) | tmp->tm_min;
	rtc->seconds = tmp->tm_sec;

	return 0;
}

void rtc_reset(void)
{
	volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE);

	if ((rtc->cr & RTC_CR_EN) == 0) {
		printf("real-time-clock was stopped. Now starting...\n");
		rtc->cr |= RTC_CR_EN;
	}

	rtc->cr |= RTC_CR_SWR;
}

#endif				/* CONFIG_MCFRTC && CONFIG_CMD_DATE */
Commit	Line	Data
8e585f02	1	/*
5cdc07c7 TL	2	* Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
5cdc07c7 TL	3	* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
8e585f02	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
8e585f02 TL	6	*/
	7
	8	#include <common.h>
3e66c078	9
871c18dd	10	#if defined(CONFIG_CMD_DATE)
3e66c078	11
8e585f02 TL	12	#include <command.h>
8e585f02 TL	13	#include <rtc.h>
5cdc07c7 TL	14	#include <asm/immap.h>
5cdc07c7 TL	15	#include <asm/rtc.h>
8e585f02	16
8e585f02 TL	17	#undef RTC_DEBUG
8e585f02 TL	18
6d0f6bcf	19	#ifndef CONFIG_SYS_MCFRTC_BASE
8e585f02 TL	20	#error RTC_BASE is not defined!
	21	#endif
	22
	23	#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) \|\| ((y) % 400) == 0)
	24	#define STARTOFTIME 1970
	25
b73a19e1	26	int rtc_get(struct rtc_time *tmp)
8e585f02	27	{
6d0f6bcf	28	volatile rtc_t rtc = (rtc_t ) (CONFIG_SYS_MCFRTC_BASE);
8e585f02 TL	29
	30	int rtc_days, rtc_hrs, rtc_mins;
	31	int tim;
	32
	33	rtc_days = rtc->days;
	34	rtc_hrs = rtc->hourmin >> 8;
	35	rtc_mins = RTC_HOURMIN_MINUTES(rtc->hourmin);
	36
	37	tim = (rtc_days * 24) + rtc_hrs;
	38	tim = (tim * 60) + rtc_mins;
	39	tim = (tim * 60) + rtc->seconds;
	40
9f9276c3	41	rtc_to_tm(tim, tmp);
8e585f02 TL	42
	43	tmp->tm_yday = 0;
	44	tmp->tm_isdst = 0;
	45
	46	#ifdef RTC_DEBUG
	47	printf("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
	48	tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
	49	tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
	50	#endif
b73a19e1 YT	51
b73a19e1 YT	52	return 0;
8e585f02 TL	53	}
8e585f02 TL	54
d1e23194	55	int rtc_set(struct rtc_time *tmp)
8e585f02	56	{
6d0f6bcf	57	volatile rtc_t rtc = (rtc_t ) (CONFIG_SYS_MCFRTC_BASE);
8e585f02 TL	58
	59	static int month_days[12] = {
	60	31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
	61	};
	62	int days, i, months;
	63
	64	if (tmp->tm_year > 2037) {
	65	printf("Unable to handle. Exceeding integer limitation!\n");
	66	tmp->tm_year = 2027;
	67	}
	68	#ifdef RTC_DEBUG
	69	printf("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
	70	tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
	71	tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
	72	#endif
	73
	74	/* calculate days by years */
	75	for (i = STARTOFTIME, days = 0; i < tmp->tm_year; i++) {
	76	days += 365 + isleap(i);
	77	}
	78
	79	/* calculate days by months */
	80	months = tmp->tm_mon - 1;
	81	for (i = 0; i < months; i++) {
	82	days += month_days[i];
	83
	84	if (i == 1)
	85	days += isleap(i);
	86	}
	87
	88	days += tmp->tm_mday - 1;
	89
	90	rtc->days = days;
	91	rtc->hourmin = (tmp->tm_hour << 8) \| tmp->tm_min;
	92	rtc->seconds = tmp->tm_sec;
d1e23194 JCPV	93
d1e23194 JCPV	94	return 0;
8e585f02 TL	95	}
	96
	97	void rtc_reset(void)
	98	{
6d0f6bcf	99	volatile rtc_t rtc = (rtc_t ) (CONFIG_SYS_MCFRTC_BASE);
8e585f02 TL	100
	101	if ((rtc->cr & RTC_CR_EN) == 0) {
	102	printf("real-time-clock was stopped. Now starting...\n");
	103	rtc->cr \|= RTC_CR_EN;
	104	}
	105
	106	rtc->cr \|= RTC_CR_SWR;
	107	}
	108
ab77bc54	109	#endif /* CONFIG_MCFRTC && CONFIG_CMD_DATE */