[thirdparty/u-boot.git] / drivers / rtc / mc13xxx-rtc.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2008, Guennadi Liakhovetski <lg@denx.de>
 */

#include <common.h>
#include <rtc.h>
#include <spi.h>
#include <power/pmic.h>
#include <fsl_pmic.h>

int rtc_get(struct rtc_time *rtc)
{
	u32 day1, day2, time;
	int tim, i = 0;
	struct pmic *p = pmic_get("FSL_PMIC");
	int ret;

	if (!p)
		return -1;
	do {
		ret = pmic_reg_read(p, REG_RTC_DAY, &day1);
		if (ret < 0)
			return -1;

		ret = pmic_reg_read(p, REG_RTC_TIME, &time);
		if (ret < 0)
			return -1;

		ret = pmic_reg_read(p, REG_RTC_DAY, &day2);
		if (ret < 0)
			return -1;

	} while (day1 != day2 && i++ < 3);

	tim = day1 * 86400 + time;

	rtc_to_tm(tim, rtc);

	rtc->tm_yday = 0;
	rtc->tm_isdst = 0;

	return 0;
}

int rtc_set(struct rtc_time *rtc)
{
	u32 time, day;
	struct pmic *p = pmic_get("FSL_PMIC");
	if (!p)
		return -1;

	time = rtc_mktime(rtc);
	day = time / 86400;
	time %= 86400;

	pmic_reg_write(p, REG_RTC_DAY, day);
	pmic_reg_write(p, REG_RTC_TIME, time);

	return 0;
}

void rtc_reset(void)
{
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
7ce63709 GL	2	/*
7ce63709 GL	3	* Copyright (C) 2008, Guennadi Liakhovetski <lg@denx.de>
7ce63709 GL	4	*/
7ce63709 GL	5
d678a59d	6	#include <common.h>
7ce63709 GL	7	#include <rtc.h>
7ce63709 GL	8	#include <spi.h>
c7336815	9	#include <power/pmic.h>
dfe5e14f	10	#include <fsl_pmic.h>
d255bb0e	11
7ce63709 GL	12	int rtc_get(struct rtc_time *rtc)
	13	{
	14	u32 day1, day2, time;
dfe5e14f	15	int tim, i = 0;
c7336815	16	struct pmic *p = pmic_get("FSL_PMIC");
4380075e	17	int ret;
7ce63709	18
c7336815 ŁM	19	if (!p)
c7336815 ŁM	20	return -1;
7ce63709	21	do {
4380075e SB	22	ret = pmic_reg_read(p, REG_RTC_DAY, &day1);
4380075e SB	23	if (ret < 0)
dfe5e14f	24	return -1;
7ce63709	25
4380075e SB	26	ret = pmic_reg_read(p, REG_RTC_TIME, &time);
4380075e SB	27	if (ret < 0)
dfe5e14f	28	return -1;
7ce63709	29
4380075e SB	30	ret = pmic_reg_read(p, REG_RTC_DAY, &day2);
4380075e SB	31	if (ret < 0)
dfe5e14f	32	return -1;
7ce63709	33
7ce63709 GL	34	} while (day1 != day2 && i++ < 3);
	35
	36	tim = day1 * 86400 + time;
dfe5e14f	37
9f9276c3	38	rtc_to_tm(tim, rtc);
7ce63709 GL	39
	40	rtc->tm_yday = 0;
	41	rtc->tm_isdst = 0;
	42
	43	return 0;
	44	}
	45
d1e23194	46	int rtc_set(struct rtc_time *rtc)
7ce63709	47	{
dfe5e14f	48	u32 time, day;
c7336815 ŁM	49	struct pmic *p = pmic_get("FSL_PMIC");
	50	if (!p)
	51	return -1;
d255bb0e	52
71420983	53	time = rtc_mktime(rtc);
7ce63709 GL	54	day = time / 86400;
	55	time %= 86400;
	56
4380075e SB	57	pmic_reg_write(p, REG_RTC_DAY, day);
4380075e SB	58	pmic_reg_write(p, REG_RTC_TIME, time);
d1e23194	59
f3a7bddc	60	return 0;
7ce63709 GL	61	}
	62
	63	void rtc_reset(void)
	64	{
	65	}