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Date: Tue, 2 Jan 2018 13:10:08 +0800 From: Baolin Wang <baolin.wang@...aro.org> To: a.zummo@...ertech.it, alexandre.belloni@...e-electrons.com, corbet@....net Cc: arnd@...db.de, broonie@...nel.org, linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, baolin.wang@...aro.org Subject: [RFC PATCH 4/4] rtc: sc27xx: Add the get_range interface 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@...aro.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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