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rtc: mxc: set range

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Let the core handle the range, and in particular the imx1 offsetting. This
has the benefit of extending the range of the RTC further than 365 days and
making .read_time useful again on imx1.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2019-04-16 10:30:44 +02:00
parent ebc2ec4ecf
commit 83888df4b8
1 changed files with 17 additions and 13 deletions
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30
drivers/rtc/rtc-mxc.c
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@ -256,19 +256,6 @@ static int mxc_rtc_read_time(struct device *dev, struct rtc_time *tm)
*/
static int mxc_rtc_set_mmss(struct device *dev, time64_t time)
{
struct rtc_plat_data *pdata = dev_get_drvdata(dev);
/*
* TTC_DAYR register is 9-bit in MX1 SoC, save time and day of year only
*/
if (is_imx1_rtc(pdata)) {
struct rtc_time tm;
rtc_time64_to_tm(time, &tm);
tm.tm_year = 70;
time = rtc_tm_to_time64(&tm);
}
/* Avoid roll-over from reading the different registers */
do {
set_alarm_or_time(dev, MXC_RTC_TIME, time);
@ -346,6 +333,23 @@ static int mxc_rtc_probe(struct platform_device *pdev)
pdata->rtc = rtc;
rtc->ops = &mxc_rtc_ops;
if (is_imx1_rtc(pdata)) {
struct rtc_time tm;
/* 9bit days + hours minutes seconds */
rtc->range_max = (1 << 9) * 86400 - 1;
/*
* Set the start date as beginning of the current year. This can
* be overridden using device tree.
*/
rtc_time64_to_tm(ktime_get_real_seconds(), &tm);
rtc->start_secs = mktime64(tm.tm_year, 1, 1, 0, 0, 0);
rtc->set_start_time = true;
} else {
/* 16bit days + hours minutes seconds */
rtc->range_max = (1 << 16) * 86400ULL - 1;
}
pdata->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(pdata->clk_ipg)) {