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

/*
 * (C) Copyright 2011 DENX Software Engineering GmbH
 * Heiko Schocher <hs@denx.de>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <common.h>
#include <command.h>
#include <rtc.h>
#include <asm/io.h>
#include <asm/davinci_rtc.h>

#if defined(CONFIG_CMD_DATE)
int rtc_get(struct rtc_time *tmp)
{
	struct davinci_rtc *rtc = (struct davinci_rtc *)DAVINCI_RTC_BASE;
	unsigned long sec, min, hour, mday, wday, mon_cent, year;
	unsigned long status;

	status = readl(&rtc->status);
	if ((status & RTC_STATE_RUN) != RTC_STATE_RUN) {
		printf("RTC doesn't run\n");
		return -1;
	}
	if ((status & RTC_STATE_BUSY) == RTC_STATE_BUSY)
		udelay(20);

	sec	= readl(&rtc->second);
	min	= readl(&rtc->minutes);
	hour	= readl(&rtc->hours);
	mday	= readl(&rtc->day);
	wday	= readl(&rtc->dotw);
	mon_cent = readl(&rtc->month);
	year	= readl(&rtc->year);

	debug("Get RTC year: %02lx mon/cent: %02lx mday: %02lx wday: %02lx "
		"hr: %02lx min: %02lx sec: %02lx\n",
		year, mon_cent, mday, wday,
		hour, min, sec);

	tmp->tm_sec  = bcd2bin(sec  & 0x7F);
	tmp->tm_min  = bcd2bin(min  & 0x7F);
	tmp->tm_hour = bcd2bin(hour & 0x3F);
	tmp->tm_mday = bcd2bin(mday & 0x3F);
	tmp->tm_mon  = bcd2bin(mon_cent & 0x1F);
	tmp->tm_year = bcd2bin(year) + 2000;
	tmp->tm_wday = bcd2bin(wday & 0x07);
	tmp->tm_yday = 0;
	tmp->tm_isdst = 0;

	debug("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);

	return 0;
}

int rtc_set(struct rtc_time *tmp)
{
	struct davinci_rtc *rtc = (struct davinci_rtc *)DAVINCI_RTC_BASE;

	debug("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);
	writel(bin2bcd(tmp->tm_year % 100), &rtc->year);
	writel(bin2bcd(tmp->tm_mon), &rtc->month);

	writel(bin2bcd(tmp->tm_wday), &rtc->dotw);
	writel(bin2bcd(tmp->tm_mday), &rtc->day);
	writel(bin2bcd(tmp->tm_hour), &rtc->hours);
	writel(bin2bcd(tmp->tm_min), &rtc->minutes);
	writel(bin2bcd(tmp->tm_sec), &rtc->second);
	return 0;
}

void rtc_reset(void)
{
	struct davinci_rtc *rtc = (struct davinci_rtc *)DAVINCI_RTC_BASE;

	/* run RTC counter */
	writel(0x01, &rtc->ctrl);
}
#endif
Commit	Line	Data
41d272d1 HS	1	/*
	2	* (C) Copyright 2011 DENX Software Engineering GmbH
	3	* Heiko Schocher <hs@denx.de>
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
41d272d1 HS	6	*/
	7	#include <common.h>
	8	#include <command.h>
	9	#include <rtc.h>
	10	#include <asm/io.h>
155d424a	11	#include <asm/davinci_rtc.h>
41d272d1 HS	12
41d272d1 HS	13	#if defined(CONFIG_CMD_DATE)
41d272d1 HS	14	int rtc_get(struct rtc_time *tmp)
41d272d1 HS	15	{
5d4d38d1	16	struct davinci_rtc rtc = (struct davinci_rtc )DAVINCI_RTC_BASE;
41d272d1 HS	17	unsigned long sec, min, hour, mday, wday, mon_cent, year;
	18	unsigned long status;
	19
	20	status = readl(&rtc->status);
	21	if ((status & RTC_STATE_RUN) != RTC_STATE_RUN) {
	22	printf("RTC doesn't run\n");
	23	return -1;
	24	}
	25	if ((status & RTC_STATE_BUSY) == RTC_STATE_BUSY)
	26	udelay(20);
	27
	28	sec = readl(&rtc->second);
	29	min = readl(&rtc->minutes);
	30	hour = readl(&rtc->hours);
	31	mday = readl(&rtc->day);
	32	wday = readl(&rtc->dotw);
	33	mon_cent = readl(&rtc->month);
	34	year = readl(&rtc->year);
	35
	36	debug("Get RTC year: %02lx mon/cent: %02lx mday: %02lx wday: %02lx "
	37	"hr: %02lx min: %02lx sec: %02lx\n",
	38	year, mon_cent, mday, wday,
	39	hour, min, sec);
	40
	41	tmp->tm_sec = bcd2bin(sec & 0x7F);
	42	tmp->tm_min = bcd2bin(min & 0x7F);
	43	tmp->tm_hour = bcd2bin(hour & 0x3F);
	44	tmp->tm_mday = bcd2bin(mday & 0x3F);
	45	tmp->tm_mon = bcd2bin(mon_cent & 0x1F);
	46	tmp->tm_year = bcd2bin(year) + 2000;
	47	tmp->tm_wday = bcd2bin(wday & 0x07);
	48	tmp->tm_yday = 0;
	49	tmp->tm_isdst = 0;
	50
	51	debug("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
	52	tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
	53	tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
	54
	55	return 0;
	56	}
	57
	58	int rtc_set(struct rtc_time *tmp)
	59	{
5d4d38d1	60	struct davinci_rtc rtc = (struct davinci_rtc )DAVINCI_RTC_BASE;
41d272d1 HS	61
	62	debug("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
	63	tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
	64	tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
	65	writel(bin2bcd(tmp->tm_year % 100), &rtc->year);
	66	writel(bin2bcd(tmp->tm_mon), &rtc->month);
	67
	68	writel(bin2bcd(tmp->tm_wday), &rtc->dotw);
	69	writel(bin2bcd(tmp->tm_mday), &rtc->day);
	70	writel(bin2bcd(tmp->tm_hour), &rtc->hours);
	71	writel(bin2bcd(tmp->tm_min), &rtc->minutes);
	72	writel(bin2bcd(tmp->tm_sec), &rtc->second);
	73	return 0;
	74	}
	75
	76	void rtc_reset(void)
	77	{
5d4d38d1	78	struct davinci_rtc rtc = (struct davinci_rtc )DAVINCI_RTC_BASE;
41d272d1 HS	79
	80	/* run RTC counter */
	81	writel(0x01, &rtc->ctrl);
	82	}
	83	#endif