Source of rtc-nuc900.c - linux-imx - PHYTEC BitBucket (Stash)

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    while (!(__raw_readl(nuc900_rtc->rtc_reg + REG_RTC_AER) & AERRWENB)
                                && --timeout)
        mdelay(1);
​
    if (!timeout)
        return ERR_PTR(-EPERM);
​
    return NULL;
}
​
static int nuc900_rtc_bcd2bin(unsigned int timereg,
                unsigned int calreg, struct rtc_time *tm)
static void nuc900_rtc_bcd2bin(unsigned int timereg,
                   unsigned int calreg, struct rtc_time *tm)
{
    tm->tm_mday = bcd2bin(calreg >> 0);
    tm->tm_mon  = bcd2bin(calreg >> 8);
    tm->tm_year = bcd2bin(calreg >> 16) + 100;
​
    tm->tm_sec  = bcd2bin(timereg >> 0);
    tm->tm_min  = bcd2bin(timereg >> 8);
    tm->tm_hour = bcd2bin(timereg >> 16);
​
    return rtc_valid_tm(tm);
}
​
static void nuc900_rtc_bin2bcd(struct device *dev, struct rtc_time *settm,
                        struct nuc900_bcd_time *gettm)
{
    gettm->bcd_mday = bin2bcd(settm->tm_mday) << 0;
    gettm->bcd_mon  = bin2bcd(settm->tm_mon) << 8;
​
    if (settm->tm_year < 100) {
        dev_warn(dev, "The year will be between 1970-1999, right?\n");
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}
​
static int nuc900_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
    struct nuc900_rtc *rtc = dev_get_drvdata(dev);
    unsigned int timeval, clrval;
​
    timeval = __raw_readl(rtc->rtc_reg + REG_RTC_TLR);
    clrval  = __raw_readl(rtc->rtc_reg + REG_RTC_CLR);
​
    return nuc900_rtc_bcd2bin(timeval, clrval, tm);
    nuc900_rtc_bcd2bin(timeval, clrval, tm);
​
    return 0;
}
​
static int nuc900_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
    struct nuc900_rtc *rtc = dev_get_drvdata(dev);
    struct nuc900_bcd_time gettm;
    unsigned long val;
    int *err;
​
    nuc900_rtc_bin2bcd(dev, tm, &gettm);
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}
​
static int nuc900_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
    struct nuc900_rtc *rtc = dev_get_drvdata(dev);
    unsigned int timeval, carval;
​
    timeval = __raw_readl(rtc->rtc_reg + REG_RTC_TAR);
    carval  = __raw_readl(rtc->rtc_reg + REG_RTC_CAR);
​
    return nuc900_rtc_bcd2bin(timeval, carval, &alrm->time);
    nuc900_rtc_bcd2bin(timeval, carval, &alrm->time);
​
    return rtc_valid_tm(&alrm->time);
}
​
static int nuc900_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
    struct nuc900_rtc *rtc = dev_get_drvdata(dev);
    struct nuc900_bcd_time tm;
    unsigned long val;
    int *err;
​
    nuc900_rtc_bin2bcd(dev, &alrm->time, &tm);