LXR uboot/drivers/rtc/mc13xxx-rtc.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2008, Guennadi Liakhovetski <lg@denx.de>
   4 */
   5
   6#include <common.h>
   7#include <rtc.h>
   8#include <spi.h>
   9#include <power/pmic.h>
  10#include <fsl_pmic.h>
  11
  12int rtc_get(struct rtc_time *rtc)
  13{
  14        u32 day1, day2, time;
  15        int tim, i = 0;
  16        struct pmic *p = pmic_get("FSL_PMIC");
  17        int ret;
  18
  19        if (!p)
  20                return -1;
  21        do {
  22                ret = pmic_reg_read(p, REG_RTC_DAY, &day1);
  23                if (ret < 0)
  24                        return -1;
  25
  26                ret = pmic_reg_read(p, REG_RTC_TIME, &time);
  27                if (ret < 0)
  28                        return -1;
  29
  30                ret = pmic_reg_read(p, REG_RTC_DAY, &day2);
  31                if (ret < 0)
  32                        return -1;
  33
  34        } while (day1 != day2 && i++ < 3);
  35
  36        tim = day1 * 86400 + time;
  37
  38        rtc_to_tm(tim, rtc);
  39
  40        rtc->tm_yday = 0;
  41        rtc->tm_isdst = 0;
  42
  43        return 0;
  44}
  45
  46int rtc_set(struct rtc_time *rtc)
  47{
  48        u32 time, day;
  49        struct pmic *p = pmic_get("FSL_PMIC");
  50        if (!p)
  51                return -1;
  52
  53        time = rtc_mktime(rtc);
  54        day = time / 86400;
  55        time %= 86400;
  56
  57        pmic_reg_write(p, REG_RTC_DAY, day);
  58        pmic_reg_write(p, REG_RTC_TIME, time);
  59
  60        return 0;
  61}
  62
  63void rtc_reset(void)
  64{
  65}
  66