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Subject[RFC PATCH 4/4] rtc: sc27xx: Add the get_range interface
Date
Add the get_range interface for sc27xx RTC driver to tell the RTC
core what is the valid range for RTC hardware device.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
drivers/rtc/rtc-sc27xx.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/rtc/rtc-sc27xx.c b/drivers/rtc/rtc-sc27xx.c
index d544d52..97b1120 100644
--- a/drivers/rtc/rtc-sc27xx.c
+++ b/drivers/rtc/rtc-sc27xx.c
@@ -536,12 +536,22 @@ static int sprd_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
return ret;
}

+static int sprd_rtc_read_range(struct device *dev, time64_t *max_hw_secs,
+ time64_t *min_hw_secs)
+{
+ *min_hw_secs = 0;
+ *max_hw_secs = (((time64_t)(SPRD_RTC_DAY_MASK * 24) + 23) * 60 + 59) * 60 + 59;
+
+ return 0;
+}
+
static const struct rtc_class_ops sprd_rtc_ops = {
.read_time = sprd_rtc_read_time,
.set_time = sprd_rtc_set_time,
.read_alarm = sprd_rtc_read_alarm,
.set_alarm = sprd_rtc_set_alarm,
.alarm_irq_enable = sprd_rtc_alarm_irq_enable,
+ .read_range = sprd_rtc_read_range,
};

static irqreturn_t sprd_rtc_handler(int irq, void *dev_id)
--
1.7.9.5
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