mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
155d424a9a
Create a common header file for the RTC IP block that is shared between davinci and am33xx. Signed-off-by: Tom Rini <trini@ti.com>
83 lines
2.2 KiB
C
83 lines
2.2 KiB
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
|