Source of rtc-ab-b5ze-s3.c - linux-imx - PHYTEC BitBucket (Stash)

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err:
    return ret;
}
​
static int abb5zes3_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
    struct abb5zes3_rtc_data *data = dev_get_drvdata(dev);
    u8 regs[ABB5ZES3_REG_RTC_SC + ABB5ZES3_RTC_SEC_LEN];
    int ret;
​
    /*
     * Year register is 8-bit wide and bcd-coded, i.e records values
     * between 0 and 99. tm_year is an offset from 1900 and we are
     * interested in the 2000-2099 range, so any value less than 100
     * is invalid.
     */
    if (tm->tm_year < 100)
        return -EINVAL;
​
    regs[ABB5ZES3_REG_RTC_SC] = bin2bcd(tm->tm_sec); /* MSB=0 clears OSC */
    regs[ABB5ZES3_REG_RTC_MN] = bin2bcd(tm->tm_min);
    regs[ABB5ZES3_REG_RTC_HR] = bin2bcd(tm->tm_hour); /* 24-hour format */
    regs[ABB5ZES3_REG_RTC_DT] = bin2bcd(tm->tm_mday);
    regs[ABB5ZES3_REG_RTC_DW] = bin2bcd(tm->tm_wday);
    regs[ABB5ZES3_REG_RTC_MO] = bin2bcd(tm->tm_mon + 1);
    regs[ABB5ZES3_REG_RTC_YR] = bin2bcd(tm->tm_year - 100);
​
    mutex_lock(&data->lock);
    ret = regmap_bulk_write(data->regmap, ABB5ZES3_REG_RTC_SC,
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            dev_dbg(dev, "%s: irq %d used by RTC\n", __func__,
                client->irq);
        } else {
            dev_err(dev, "%s: irq %d unavailable (%d)\n",
                __func__, client->irq, ret);
            goto err;
        }
    }
​
    data->rtc->ops = &rtc_ops;
    data->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
    data->rtc->range_max = RTC_TIMESTAMP_END_2099;
​
    /* Enable battery low detection interrupt if battery not already low */
    if (!data->battery_low && data->irq) {
        ret = _abb5zes3_rtc_battery_low_irq_enable(regmap, true);
        if (ret) {
            dev_err(dev, "%s: enabling battery low interrupt "
                "generation failed (%d)\n", __func__, ret);
            goto err;
        }
    }