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rtc: ftrtc010: let the core handle range 

The current range handling is highly suspicious. Anyway, let the core
handle it.
The RTC has a 32 bit counter on top of days + hh:mm:ss registers.

Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2018-06-04 16:15:28 +02:00
parent 73318f8b6b
commit b8e62b58bc
1 changed files with 10 additions and 3 deletions
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13
drivers/rtc/rtc-ftrtc010.c
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@ -95,9 +95,6 @@ static int ftrtc010_rtc_set_time(struct device *dev, struct rtc_time *tm)
u32 sec, min, hour, day, offset;
timeu64_t time;
if (tm->tm_year >= 2148) /* EPOCH Year + 179 */
return -EINVAL;
time = rtc_tm_to_time64(tm);
sec = readl(rtc->rtc_base + FTRTC010_RTC_SECOND);
@ -120,6 +117,7 @@ static const struct rtc_class_ops ftrtc010_rtc_ops = {
static int ftrtc010_rtc_probe(struct platform_device *pdev)
{
u32 days, hour, min, sec;
struct ftrtc010_rtc *rtc;
struct device *dev = &pdev->dev;
struct resource *res;
@ -172,6 +170,15 @@ static int ftrtc010_rtc_probe(struct platform_device *pdev)
rtc->rtc_dev->ops = &ftrtc010_rtc_ops;
sec = readl(rtc->rtc_base + FTRTC010_RTC_SECOND);
min = readl(rtc->rtc_base + FTRTC010_RTC_MINUTE);
hour = readl(rtc->rtc_base + FTRTC010_RTC_HOUR);
days = readl(rtc->rtc_base + FTRTC010_RTC_DAYS);
rtc->rtc_dev->range_min = (u64)days * 86400 + hour * 3600 +
min * 60 + sec;
rtc->rtc_dev->range_max = U32_MAX + rtc->rtc_dev->range_min;
ret = devm_request_irq(dev, rtc->rtc_irq, ftrtc010_rtc_interrupt,
IRQF_SHARED, pdev->name, dev);
if (unlikely(ret))